I in urgent need of a warm sleeping bag for use on an upcoming desert running race I entered in, the Marathon des Sables in Morocco. Although this conjures up visions of heat and sleeping under wispy silk fabric whilst warm winds blow, the reality is that at night, temperatures can plummet to freezing. I'm not too concerned about cost and need a bag which is at least good for about 32 degrees, and most importantly, LIGHT!! It has to be carried and raced with for over seven days. Please recommend waterproof varieties or appropriate techniques as it can pour. Dio Wong Hong Kong, China

My summer bag is an Integral Designs Andromeda Strain (40-degree, Primaloft); my three-season sack is the North Face Cat's Meow (20-degree, Polarguard Delta). Both are sweet bags. My question: can these bags be combined (summer bag inside three-season bag) to make a winter bag? Will I gain much, or will the inside bag be unable to loft up and therefore not provide much additional benefit? Thanks! Bill Stell Charlottesville, Virginia

I was thinking about combining my expandable Mountain Hardwear Galaxy SL sleeping bag with the maker's 40-degree Down Upgrade bag. What do you think about combining these two sleeping bags for a Denali summit attempt? Rob Boston, Massachusetts

A friend and I are planning an attempt to summit Mount Shasta this summer. Neither of us owns an ice ax or crampons and we plan to rent those items when we get to the area. But recently I've been looking at Kahtoolas, which are kind of "crampons light." They're aluminum with no front points and touted as compatible with everything from hiking boots to running shoes. Looks like they might be adequate for a trek up Mount Shasta. Also, I might get some use out of these in future winter hikes. But they are north of 100 bucks (in the same territory as some entry-level crampons). Do you have any experience/insights on Kahtoolas? Mitch Thompson Shaker Heights, Ohio

I interested in buying a quality set of boots and skis, primarily for Vermont and New England skiing. Problem is, I wear a two-centimeter orthotic insert in my right shoe that corrects a leg length problem and heavy over-pronation. Can I get this custom built into ski boots? Any other options? Also, what's your opinion on the softer boots like the Atomic Beta Ride 10.50? Are they worth the $600? What is the best ski for varying New England snow conditions (i.e. one day powder, next day ice)? Walt McMann Hden, Connecticut

I would like some advice on a permanent or removable roof rack, mainly for carrying several pairs of skis on my Isuzu Trooper. Isuzu sells a rack for around $350, but I'm sure I can find something better for the se money or even less. John Boise, Idaho

I considering buying a pair of hiking shoes for day hikes with a light load (usually my 30-pound daughter in a child carrier). I have a pair of Merrell hiking boots and tennis shoes and I find both too warm (I don't know if its just me but I find tennis shoes very warm even though I don't have a tendency to sweat). Hence, I always end up using my Teva sandals, which don't give me enough support and don't protect my feet. Can you propose a closed hiking shoe that won't make me feel like my feet are in a furnace? Thanks in advance. Guillaume Frechette Columbus, Ohio

Dr Gear Guy, please realize that you are completely indemnified from any liability as to the efficacy of your answer, but I'm wondering what gear you'd specifically recommend for a hiker who has undergone a total hip replacement and refuses to cast a deaf ear to the call of the wild? I have a pair of good trekking poles. Anything else come to mind? Keith Columbus, Ohio

My ne is George, and I a Gearaholic. I know I have a problem, but I cannot control myself. Although I have eight packs, ranging from a Gregory Denali Pro to a Mountainsmith Ghost, I have the se dilemma with all of them. Though of average build, my hips are non-existent, causing my hipbelts to slide down my waist. This problem can be very bad in winter when lugging a heavy pack and wearing slippery Gore-Tex clothes. Are there any gripping solutions that can be applied, or is there another pack that can cure my problem? George Rochester, New York

I've been looking for a lightweight, water-resistant jacket for hiking and mountain biking. I've been looking at the Patagonia Dragonfly Pullover, which is advertised as water-resistant, very light (3 oz), and compact. It is also rather expensive ($135). Is this jacket worth the money? Are there any other jackets this category that you would recommend? Chris Newark, New York

I own a 1994 Isuzu Trooper SE that has a moon roof and a factory luggage rack. I looking for a roof rack system to carry bikes. I've looked through Thule and Yakima online, and wondered if I could use the existing luggage tracks and buy towers to go with them and then the bars. I really want something for the roof, not a tire or hitch mount. WD Ray Columbia, South Carolina

OK, this is a serious question. You seem like the kind of guy who does a fair amount of biking in cold, windy places. I've recently started to use my bike to commute to work and have noticed a "small" change in a very personal area. The wind goes right through my pants, and when I arrive at my location my little guy is tucked away like a scared turtle. This isn't a real huge problem, just inconvenient and uncomfortable. Do you know of any underwear or pants that could help fight this problem? Karl Rostock, Germany

What's the best audio device that I can clip onto a pair of shorts when running and doing other multisport activities? Ceron Christchurch, New Zealand

I looking into buying a soft-shell jacket and interested in the Cloudveil Serendipity, the Arc'teryx Gma, and another jacket from Salomon. What are your opinions on these jackets and are there any others that I should consider? Mike Kane Rock Island, Illinois

Several years ago, I bought a pair of "funny-looking" Salomon Adventure 9 boots. They were virtually perfect, but are finally wearing out. Since there's no sign of a similar boot in today's U.S. Salomon line, can you think of an alternative? Ray Cleveland Heights, Ohio

I'm a letter carrier looking for a quality rain jacket to keep me dry in spring showers or pouring storms, all through the New England seasons. Could you please point me in the right direction? Michael Springfield, Massachusetts

On a recent winter excursion in the Adirondacks, my Whisperlite stove failed. The fuel was pressurizing, but it wasn't reaching the ignition wick due to a blockage in the fuel line. Why does this happen in cold weather (our temperature was in the single digits), and how can it be prevented? John Buffalo, New York

I'm beginning to think that today's trend toward Assos-esque padded cycling shorts—padding formerly being the saddle's job—has left me with more saddle sores. This bulky new style only serves to form a bulk of soggy material once the sweat soaks through, causing blisters and general discomfort. Does anyone make shorts or bibs with either minimal padding or something akin to the original chois style? Between the incontinence of infancy and agedness, I prefer not to wear a diaper while riding. Can you help? Clay Wimberley, Texas

I have been backpacking and hiking for many years but I was recently told that for long hikes I should put on my liners, spread Vaseline on them, and then put on my hiking socks. Do you know anything about this or is this a joke? Joaquin Lira Oshkosh, Wisconsin

I'm going trekking around Mont Blanc and have been told not to drink any glacial meltwater because it contains tiny sharp particles of rock, called talc, which can shred one's insides. I have an Aquira water bottle with a two-micron filter, which is supposed to remove microscopic pathogens. Will it stop talc? Hal Berkeley, California

I've been shopping for a car-camping tent for our family (myself, my husband, two kids aged 14 and nine, plus one growing golden retriever puppy). I want a three-season tent that gives us a fair amount of space, maybe with dividers, but the mind boggles with all the choices: nylon, polyester, taffeta, fiberglass, aluminum, this D mesh, that D mesh. I feel like I need a degree in materials engineering to figure this out! Can you help? Tracey Irvine, California

Sage of swag, I'm in the market for a road bike, and looking for direction. Initially, I'll be using it for fitness riding, but I anticipate riding in local road races in the future. I'm a family man with a limited budget for recreational toys. That said, I want something that's going to stand up—a bike that I won't have to replace or extensively or upgrade as I get into the sport in a bigger way. Is a bike equipped with Shimano 105 group the "minimum" I should be looking at? Which models should I be considering, and at what price point? Greg Basky Saskatoon, Saskatchewan, Canada

I'm planning a through-hike of the Continental Divide Trail this summer, and I want to go ultra-light. What's the best tarp to use—the easiest to set up, the best in wind, and so on? Syd Seattle, Washington

Great burning bush of the gear desert, Marmot Precip hat or urban sombrero? I want to buy a good waterproof hat; hoods are cool and all, but they're sometimes a pain in the fanny pack. I have read that you often prefer hats to hoods. So, would you choose the Marmot Precip Safari Hat, the Outdoor Research Seattle Sombrero, or something different altogether? Please help me before I do something dumb—like ask someone else. Jay Eugene, Oregon

I'm a big guy (six feet five, 270 pounds) who's interested in buying a hybrid bike for some urban biking and trail riding (nothing too extreme or competitive). So I need a bike that fits but doesn't cost a fortune. Also, can you explain mountain- and hybrid-bike sizing conventions, especially as there doesn't seem to be a standard way of measuring hybrid bikes?

As a thrifty person with only occasional needs for real cold weather gear, I'm tempted by the down jacket that Land's End sells for $70. Pretty simple design, 650 fill, seems like something that's pretty tough to screw up. Any experience with how this jacket stands up to some of the pricier down parkas from the more traditional gear makers? I'd be using it for an around the cp and belay over-jacket in the Sierras. Raymond Tarto Oakland, California

I want to buy a bike to ride the two miles to work and head downtown on the weekends, about a 15-mile ride. Thing is, I have an attachment to big comfy handlebars, seats, and three-speed internal gears; I cringe at all the "touring" bikes with their rock-hard seats and hunched-over handlebars. I currently have a cruiser and walk it up hills. Can you recommend a bike that won't break the bank? Tiffany Santa Barbara, California

I bought my first pair of snowshoes, and now I need to buy some snowshoe boots. What do you think of Columbia's Excellerator or Bugabootoo boots? Dan St. Louis, Missouri

Man, do I need some bike advice. I have been riding mountain bikes exclusively for the last ten years. I now want to buy a road bike specifically for commuting and exercise. I would like something fun and comfortable to ride, but geared like a road bike for speed. I considering the Marin Tiburon and the Specialized Sirrus Pro, which are in my price range. What should I go for? Lawrence Elk Grove, California

I know you get lots of questions about the best outdoor cameras, but can you recommend a camera that operates well at high altitudes (above 20,000 feet) and in extremely cold weather (around minus 50). I have heard that autofocus doesn't work above a certain elevation. I'm looking for a compact or SLR that is lightweight, resilient, with easily accessible batteries (for efficiency when changing them in the cold), and which will capture the highest-quality images at the top of the outdoor world. Sarah East Lansing, Michigan

I enjoy everything about my new digital camera except for the short battery life, which is especially annoying when on multi-day hikes when the battery might suddenly go dead. Are there any solar-powered products out there for recharging batteries while on the trail? John Swanton, Maryland

Oh Being of All Gear Wisdom, Following your sage advice, I've been looking for a Yashica T4 point-and-shoot to replace my partner's camera, which bit the Grand Canyon's dust on our last trip there. It appears that Yashica no longer makes the T4. Nor do they seem to have a successor model. What's your current recommendation for either a fixed or zoom lens 35mm P&S? Being a photographic troglodyte, no digital cameras allowed. Rob Brading Fairview, Oregon

I want to take my video camera with me on a trip to the Colorado mountains and hoping I can buy a solar panel to charge the battery. There seems to be some difficulty with finding info. It's a 6-volt battery and I have the adapter that plugs into a car cigarette lighter. Can I buy a 5-watt solar panel that is advertised to charge a 12-volt car battery and use it? Can I just wire up the cigarette lighter receptor to the panel, and then plug the adapter into it? Seems to me that ought to work. But, we don't know much about solar panels other than expeditions use them to charge batteries. Jeannette Singleton

I have never spent a night on the trail, sticking to day trips instead. However, it's something that I think I would like to get into. My hiking partner has the tent, stove, and first aid kit. I don't want to go out and buy all the other equipment (sleeping bag, pad, boots, etc.) until I certain that backcountry camping is for me. What would you suggest for my first trip? . Melissa Greenwood, Delaware

Can you recommend a three-season tent that is well configured and roomy for two people and a dog? Tom Miller San Francisco, California

Any recommendations for a two-person backpacking tent big enough for a six-foot, five-inch, 250-pound camper? I already have a Sierra Designs Clip Flashlight two and it seems a bit small for just one person (me), especially after more than two nights of foul weather. Jim McGowan Charlotte, North Carolina

I'm planning on hiking Vermont's LT, and because of past knee problems I'm trying to pack as light as possible. I've been considering buying the Mountain Hardwear Phantom sleeping bag, but I'm concerned about its down fill. Any thoughts? How effective is the water-resistant coating used on the superlight bags? Neil Westport, Connecticut

I am looking for a tent that will repel dew, especially as I hate the damp feeling that comes from wet grass. Which tent do you recommend? I don't do much camping, but I do like to be comfortable when I do. Tara Bowler, Wisconsin

I starting to gear-up in preparation for climbs of Mount Baker and Mount Rainier this summer. I have an older Princeton Tec headlp that I use for backpacking, but can you recommend a good replacement? Are any of the newer LED headlps good enough to use when climbing? Kleet Renton, Washington

I'm looking for an ultra-lightweight three- to four-season ski touring tent for spring in the Sierra, though it'd be nice if it could handle some winter weather also. I HATE carrying a lot of weight ski touring. Any ideas? David Hunn Long Beach, California

What gear do I need to climb K2? Just kidding! With winter fast approaching, I'm thinking about backcountry skiing again. I take avalanche safety VERY seriously and therefore take every necessary precaution. That said, accidents do happen, so I'm looking to buy an avalanche beacon just in case. I'm interested in the Tracker DTS, but how does digital technology fare in cold environments? I've also heard that earlier Tracker DTS beacons had problems with the unit switching to "receive" mode if the wearer's body pushed up against the toggle switch. Is the Ortovox F1 Focus a better, more reliable choice? Michael Vancouver, British Columbia

I'm a 40-year-old dad planning to be a mule for my young family of five (wife, two daughters, ten and 12 years old, and seven-year-old son). I'm looking for a large capacity (6,000-plus-cubic-inch) backpack. I'm currently looking at the Osprey Crescent 110, Dana Designs Terraplane, and Arc'Teryx Bora 95. I realize pack comfort will differ based on individual size and body shape. Of these three I mention, and possibly others I haven't, which carries the heaviest loads and provides the most comfort. Frank Hahn Chula Vista, California

I'm curious to hear your opinion about Osprey's line of Ariel backpacks, particularly their Ariel 75. I can't seem to find any reviews on anything other than the Aether 60. I loved the Osprey Luna 75, but I'm looking for something slightly lighter. My main concern is whether the suspension of this smaller pack will hold up under a 40-pound load. I don't want to sacrifice good load transfer and stability simply for the sake of a lighter pack. Erica Boston, Massachusetts

This summer, I will be traveling in Peru and concerned about thieves cutting into my pack. What do you recommend to protect my belongings? Pat Harlingen, Texas

I'm planning an Appalachian Trail through-hike for 2003. I've poured over all the gear columns/ratings/etc. And with a bit of your wisdom have narrowed down most of my gear. But...I'm thinking of going stoveless. What's your opinion and do you know any recipes for easy/light/nutritious stoveless meals? Tim Moose, Wyoming

What's a good, moderately priced tire for mountain biking in the snow? I'm not looking to spend a fortune for a studded snow tire, just something with better traction that I can use in the spring as well. Paul Patterson, New York

I want to upgrade from a cheap pair of compact binoculars. Assuming I had a pile of money burning its way out of my pocket, would I see much difference between a pair of Nikon Travelites and Leica Trinovids? Also, are there any other models I should look at (through)? Joe Lawrenceville, Georgia

I'm wondering if you know the difference between all the soft-shell fabrics, specifically Power Shield and Schoeller Dryskin. Also, what's the deal with the ultralight rain shells like Patagonia's Microburst or Arc'Teryx's Sirrus SL? REI's Web site used to say that Sirrus SL is "truly an ultralight shell, thus should not be for everyday use." Are they suggesting the ultralight jackets are not that durable? Does it make sense to carry both a soft-shell and an ultralight rain shell on a long backpacking trip? Jenny San Diego, California

I need a good solo tent in the $200 price range for winter mountain climbing trips. It seems that manufacturers have come out with many new solo tents, but I can't tell if any of them would work for winter camping. Mike Rapid City, South Dakota

In southern California the sun is out and the hills are green. Yes, it's almost spring, the time when a young man's fancy turns to...cycling. My helmet is several years old, and I think it's time to retire it. Thumbing through a number of catalogs, I can't believe the wide range of prices. Just what the heck does $200 buy me that $40 doesn't? Larry Long Beach, California

This summer I plan on taking a backpacking trip to the Selway River or Kelly Creek in Idaho. I hope to do some fishing as well, which will require wading in the river. I do not want to take wading boots due to the weight. Do you have any recommendations for sandals or other footwear that can serve as both hiking sandals and water sandals? I need good sole support for hiking and walking over boulders while wading. I also require a non-slip surface that will grip wet rocks. I have found that hook-and-loops material does not work well when wet. Last summer, the hook-and-loop straps kept coming undone on my Tevas. Any help is greatly appreciated. J.L. Walker

I'm looking for a women's pair of insulated, waterproof or Gore-Tex, crampon-compatible hiking boots. I'm not climbing Mount Everest—what I'm looking for is a boot to get me through the winter when I don't need snowshoes, but it's freezing out and I may need crampons. (Specifically, in the High Peaks area of New York.) I'll be using them for long hikes on paths and over rocks. I don't seem to be able to find the perfect combo as most options seem to be heavy-duty mountaineering types. BJ Guilderland, New York

For a few years I have been using a Macpac Microlight tent, perfect for me and my pack. However, I'm now looking for a slightly larger tent to also accommodate my dog. Finding that Macpacs are not sold in this country and mail order prices are exorbitant, I was wondering what you'd recommend that's comparable in durability, waterproofness, weight, and quality, hopefully for a more reasonable price. Jennifer Seattle, Washington

I live in the city and looking for a bike that I can ride to my local bike trail via city streets (approximately three miles). The trail is dirt and gravel, but I'll also need front suspension because of reckless drivers who sometimes force you onto a sidewalk. I have been to several bike stores and really confused by all the options: Raleigh C500, Cannondale, Giant Cypress LX, Trek? One store advised me to wait until mid-August for the 2004 models to arrive in stores. My budget is $500 to $600. Chris Philadelphia, Pennsylvania

I'm planning to climb Aconcagua next year followed by Denali the year after, and I was wondering about layering for warmth using down sleeping bags and parkas. I want to avoid buying really specialized gear (like the Feathered Friends Rock & Ice Parka, or their Snowy Owl bag) that I can only use on the coldest peaks like Denali. Is it possible to achieve a comfortable temperature rating on this mountain using a combination of the Icefall Parka and the Widgeon bag? The reason I'm asking is I would like one bag for all my mountaineering endeavors (including the not-so-cold trainer mountains). John Toronto, Ontario

I wear prescription lenses in my sunglasses and want to get a similar custom-made pair of glasses for paddling at night. I've heard that a yellow tint on the lenses helps to bring out objects. Is this true? Is there anything else I should consider when ordering this pair of glasses? Dennis Milton, Florida

I'm going to Alaska's Denali in June, so are there any particular jackets out there that you would recommend? Would the Marmot Parbat Parka be sufficient on a breezy day atop Mount Denali? Eric Maryland

How do you know when it's time to replace your running shoes? I have been road running on a pair of New Balance 804s for about a year. I weigh 200 pounds and run about two to three miles five days a week. Any suggestions for new shoes? Craig Portland, Oregon

My son and I need to purchase raingear for an eight-day canoe trek to Minnesota's Boundary Waters Canoe Area this July. Do I need to get a Gore-Tex parka like most people recommend, or are the newer, lighter styles like Marmot's PreCip enough for such a trip? David Wichita, Kansas

A friend suggested that I extend the life of my leather hiking boots by proactively applying se-grip to the stitching and the area where the upper meets the sole of the boot. Is this legitimate advice or have the petroleum distillates simply gone to his head? Chuck Freeport, Maine

I sweat a ridiculous ount and have no problem staying warm, having nordic skied in sub-zero temps wearing only a thin nylon T-shirt and XCR shell. So, I'm in search of the ideal base layer shirt. I like Patagonia's lightweight Capilene, but I'm still experimenting with various fabrics and manufacturers. I'm skeptical of Patagonia's silkweights as the stitching across the shoulders looks like it would be irritating with a big pack on. Do you have any wisdom to impart? Seyil Toronto, Ontario

Can you help me choose a boot for a trip to Argentina's Mount Aconcagua? I have summited several fourteeners in my La Sportiva Makalus without a hiccup, but I'm afraid Aconcagua is too much mountain for these boots. We plan on tackling the Polish Glacier route, and I was leaning towards a plastic double boot like Koflach or Scarpa. But, as usual, your input could sway me! Eric Palmetto, Georgia

I know nylon fabrics deteriorate from too much exposure to the sun, but does nylon lose its strength from old age? Is a sleeping bag that has been in storage for 20 years without seeing one ray of sunshine still "as good as new"? Are there both "good" and "bad" quality nylon fabrics, or are they all made equal? David Sparta, Michigan

OK, so jogging on the trail with a baby isn't safe. But, I would like to go backpacking after our baby is born. Are there any all-terrain strollers suitable for trails? I know there are baby carriers to wear, but dad still has to carry the rest of the gear, doesn't he? M. Dittman Cleveland, Tennessee

Will a space blanket attract lightning? Jeff Santa Monica, California

Now that hikers are supposed to filter/purify all the water they consume, I'm curious if ANY contact with untreated wilderness water is safe? Is it OK to splash water from a clear stre on my face and arms to cool off? Is it OK to jump in a clear lake for a swim? Would doing these things expose me to infection through ears, eyes, nose, ETC.? What about canoeists and kayakers who are in and around untreated water all the time? Mark Her Fullerton, California

My wife says that my regular reading of your column has cost us a fortune but I swear you've saved me money. Here's a chance to prove your worth, and much more importantly, prove me right. It's spring again, and my Mountain Hardwear Guide pants are suffering from a severe case of "glissade bottom." Are they totaled, or is there a way to economically repair this malady without tossing these wonderful but expensive pants in the trash heap? Secondly, I've tried to prevent "g.b." by pulling a pair of shorts over the pants, but to no avail. The shorts just ride up in to full wedgie mode, leaving me uncomfortable, and the pants largely exposed to the worst effects of snow abrasion. Is there some other method to avoid this in the first place, or should I just buy cheap pants for mountaineering? John Giles Carlsbad, California

Airlines have regulations prohibiting travel with fuel bottles and stoves, even if they're empty and purged. How can you fly to backpacking destinations with white gas stoves and fuel bottles? Do the rules make such equipment obsolete for travel where flights are involved? Fun Walled Lake, Michigan

I guessing that the tool that Bradford Hmar was looking for in a recent question is the Schrade I-Quip (http://www.schradeknives.com). It has an altimeter, barometer, digital compass, watch, whistle, mirror, flashlight, lighter compartment, screwdriver, knife, corkscrew, saw, and scissors. Jason Grech Decatur, Georgia

I'm planning a trip to Tibet, and I'm looking for a bag in the zero to ten degrees Fahrenheit range. In addition to struggling with the age-old down versus synthetic issue, I'm also confused by the suitability of those Sierra Designs' down bags that include add-on top layers, such as their Buddy Rad. (They even suggest stuffing clothing in between the layers if it's cold.) Will this setup keep your whole body warm if the add-on layer only goes on top? Overall, I place great value on lightness and even more on compressibility, but I'm always wigged out about getting down wet. Matthew Boston, Massachusetts

I'm in the market for a new sleeping bag and would like to give a down bag a try, mostly because of space and weight issues. I'd be using it primarily as my summer bag, so a 30-degree rating should be enough. Do you have any advice for a good down bag? Andy La Crosse, Wisconsin

I've been looking for a zero- or minus five-degree sleeping bag for use in early spring, but found that nobody makes any quality down bags for women. What's up with that? All Western Mountaineering bags are huge, while Feathered Friends makes only two women-specific bags, but they're rated only for 10 and 20 degrees. I just wonder, does the outdoor industry think that every outdoorsperson is some huge guy with wide shoulders and skinny hips? That has got to change! Anyways, for the problem at hand: I'm five-foot-six and on the lean side. What's a quality down bag that won't require me to expend extra energy in order to heat up excess room inside the bag? Jennifer San Diego, California

I'm planning a mountaineering trip to Bolivia in June. I have a pair of Koflach Degre boots, which have been fine on Mount Hood and when winter climbing in New Hampshire. Will these be OK for climbing Bolivia's 19,000-foot peaks? Do I need Alveolite liners? Brian Augusta, Maine

On a recent spring trip to snowy Mount Whitney, I took a gble and wore my comfy Sundowners along with a pair of Wild Country gaiters, instead of plastic boots. But, the front part of the gaiters kept slipping up and my boots quickly got soaked with all the postholing. Do you think a regular boot and gaiter combo can replace plastics (too heavy and uncomfortable) for snow travel? I'm talking multi-day trips in the California Sierras here. Jake Irvine, California

Gear Guru, what eye gear do you recommend for cross-country skiing when it's windy and snowy? Every pair of goggles I own fog up when I cross-country skiing or snowshoeing. Would glacier glasses solve this problem? Craig Portland, Oregon

So, after a year or so of ultra-light backpacking, my wife and I are starting to bring my son along, which means I need a huge pack to haul accommodation for three. Should I splurge and get a high-volume expedition pack like a Bora 95 or Gregory Denali, or are one of the new generation of external-fre packs (like Kelty's 50th anniversary edition) better value? We'll be mostly on trail, but I'm not sure if the lower-priced packs will provide enough comfort over a few days. Robert Granada Hills, California

I guess this might be more of a biological or physiological question than a straight gear question, but I notice that when I sip water from a CelBak, I have to "go" less than if I take bigger yet less frequent gulps from a water bottle. It seems that even drinking a full 70 ounces from my CelBak, compared to a quart from a bottle, is easier on my bladder. I just imagining this? Does the body better optimize water that's sipped slowly? Bill Bedford, New Hampshire

Not really a gear question, but can you tell me about all the pre-packaged trail food on the market? What have you tried? What's the best? Also, do you know of any Web sites with a good selection of trail recipes, especially vegetarian? Melissa Greenwood, Delaware

I'm planning on through-hiking the Pacific Crest Trail and would like to keep my pack weight as low as possible without sacrificing comfort. When I through-hiked the Appalachian Trail in 1990, my pack weight was around 50 pounds, including food and water. I have heard that ultralight packs are not very comfortable with loads over 20 pounds. Can you recommend a lightweight backpack for my hike? Cliff Ashford, Alabama

I'm gearing up for an ascent of Denali in May 2002. Could you advise for clothing and size of compression sacks appropriate to bring? I weigh 114 pounds so I want to minimize what I have to pack. Jeanne Stawiecki Charlton, Massachusetts