I planning a climbing trip to the Yosemite Valley in a few weeks, and I was wondering if you have any recommendations for a hydration pack I could use while climbing. I would use it to also carry a small headlp, rainjacket, and a few energy bars. I looking for something low profile that will not get in my way while climbing. Anything fit the bill? Alan Locust, New Jersey

My husband and I are having an argument about our 20-year-old down sleeping bags. The bags in question are Blacks Icecap XL mummy bags. I've recently being doing some fall camping and find that I get quite cold some nights, leading me to surmise that these sleeping bags have reached the end of their days. My husband says it's just my age, as he doesn't find them cold. Now I know I shouldn't bother arguing with him and just go out and buy myself a new sleeping bag, but I want you to tell him that down sleeping bags do "die" eventually. Can you back me up? Carol Port Moody, British Columbia

I was rock climbing in Australia earlier this year when I fell and wrecked a lumbar disc. I'm having surgery to decompress the spinal nerve in a couple of weeks (a lumbar microdiscectomy), and I'm itching to get back into trping (you call this "hiking") and climbing and so on. Since physiotherapists don't know much about backpacks, I'm wondering if you can help me: Is there a backpack that is better for your back (i.e., one that doesn't compress your lower back too much)? I currently use a fairly simple 60-liter New Zealand-made pack by Cactus Climbing. Karen Wellington, New Zealand

I have a medical condition known as Raynaud's, which basically means that I have real problems staying warm in temperatures below 50 degrees. This past winter was a killer for me. Unfortunately I can't hole up inside during the winter as my 100-pound insulated dog needs to walk (and loves the cold). What do you think would work best for me? I assume down, but the women's down parkas don't seem to be that warm. Faith Reston, Virginia

What does one do when his hero lets him down? Last fall you spoke highly of the St. Moritz Pathfinder TI watch. Well, let me tell you, the Gear Guy is fallible. This watch has been a huge letdown. The "glow factor" of the numbers is terrible, the alarm is barely audible, and the service is less than acceptable. I sent it in for warranty repair for its water resistance, being sure to mention the other factors, and the service was very slow and they never even addressed my other concerns. I think you may have made an error! (I know, hard to believe.) Tim Moose, Wyoming

Thanks for asking the Gear Guy a question. Stay tuned to the Gear Guy’s column for your answer. He should get back to you in about a week. Of course, while he’d love to answer everyone’s questions, he’s so busy testing equipment that he…

A couple years ago I bought a Condor tent from The North Face, being informed by the salesperson that it was a four-season tent, although I have since discovered that may not be the case. I planning a June mountaineering course in the North Cascades that requires a four-season tent. Will my TNF tent suffice? I haven't used it for a while and lost the instructions, so do you know how I can contact them? Russ Frostburg, Maryland

I do much of my hiking in northern California's poison oak-covered hills. Usually I can avoid getting oaked, but after a day of tromping through this toxic weed, just how long do its oils remain active on my boots, gaiters, and trekking poles? Has science determined a half-life for poison oak's poison? Carter Napa, California

I use a 1968 Pinarello road bike. So, I was on a nice ride when I heard this "boing" noise; before I knew it, the derailleur (I think it was the original) had tangled in the wheel. The derailleur is now in two pieces, so I need to replace it. Are there any brands or models you could recommend? Can I put new gears on such an old bike? Could this have been prevented? Anthony Green Bay, Wisconsin

I thinking of upgrading my steel fre road bike to a carbon fork. I have tried a carbon fork in the past, and found it to be somewhat unsteady at high-speed (40 plus mph) descents. I weigh 185 pounds-does weight have a lot to do with the choice of a fork? Any suggestions? Should I just save the money and stay with my tried-and-true steel fork? Steve Weinberger Spokane, Washington

I've been doing some research on altimeter watches and have come across a lot of bad reviews for watches that I thought were good. Which watch would you recommend between the Casio Triple Sensor Pathfinder, the Timex Helix Works, and the Suunto Vector (some guy told me the workmanship on this was terrible and it fell apart)? Nadav Jerusalem, Israel

Are there any one-person tents that you can combine to make into a two-person tent? Denise Centennial, Colorado

In search of the Golden Boot over the years, I've owned disappointing Danners, Limmer mid-weights that ate up my right heel, and a forgettable pair of Meridians. I have a fairly low-volume foot, and while my current boots—a pair of Vasque Sundowners (Gore-Tex old style)—work pretty well, my feet still get hot spots and ache after a 12-mile walk. What's the boot for me? Stephen Decatur, Alabama

I'd like to invest in a pair of waterproof-breathable pants for one- or two-week treks where I might encounter rain and snow. Ideally, the pants would not be too bulky as they might spend quite some time in my backpack (I hope). If possible, please note any brands that I can find in Europe! Nicolas Heverlee, Belgium

My Boy Scout troop is planning to buy some rappelling gear, but we need some advice first. Eric Shelbyville, Indiana

I'm looking for info on bike trailers, having checked out some B.O.B. models, the Yakima Big Tow, and Burley's Nomad. Any insights as to which one would be best for city commuting? Also, any suggestions for where I might look for a used one? Linda Olympia, Washington

I currently have an older version of the Tubbs Sierra snowshoes, but I find them to be too bulky and heavy for those trips where crampons are also required. How does the MSR Denali snowshoe compare to its competitors, and what is the "floatability" factor of the MSR snowshoes? It seems they're very narrow, so I'm curious if they will keep you from sinking in soft, deep snow. Scott Newmarket, New Hampshire

Will a pair of electric socks, worn inside waders, work when I'm steelhead fishing? More importantly, will these be safe if I'm wading in water? Ed Pawling, New York

I've got a Bibler Betid tarp, and looking for some extra protection for my Mountain Hardwear sleeping bag (down with Conduit SL shell). I don't want to carry the Betid's floor since it is a bit heavy, and doesn't offer the protection I want. Please suggest a sleeping bag cover or bivy that will allow my bag to breathe, yet shed any moisture from condensation or the occasional exposure to rain. I'd prefer not to break the bank on this, as well. Dennis Staley Englewood, Colorado

What are the alternatives to Gore-Tex? Are there any that stand out from a protection as well as breathability perspective? I would love a Gore-Tex shell, but cannot afford to drop $400 on one. Alex Charlotte, North Carolina

Do you know of any evidence that pepper spray is an effective defense against a mountain lion attack? Mike Rapid City, South Dakota

I have an aging Columbia anorak shell that I'd like to replace. The problem is that I'm having trouble finding any new anorak-style jackets. I don't mind pulling the thing over my head and love the big front pocket. Any suggestions for a replacement, something I can use when hiking, climbing, and skiing? Chris Albuquerque, New Mexico

Where can I buy a hip belt to use as a harness for pulling my homemade gear sled? Bruce Easton, Pennsylvania

Dear gear swi, I'm looking to get back into mountain biking but have absolutely no clue about mountain bikes these days. I haven't ridden one nor done any research in about six years. If you could reach into the vast knowledge that you call a brain and offer some advice on bikes in range of about $1000, I would be in great debt to you. (And I would prefer a hardtail.) J.R. Venice, California

I have a few trips planned in bug-infested territory. The problem is that I hate DEET. I just don't like using the stuff. And citronella-based products are useless. Is there anything new out there that is effective, safe to use, and won't melt plastic? Jake Santos Chicago, Illinois

In November I'll be doing the Hong Kong Trailwalker (www.trailwalker.org.hk), a 100-kilometer race with a lot of big ups and downs. I will probably do in about 25 hours. Last time I did it in Reebok DMX10's. I liked that they were lightweight and I think the cushioning helped my knees a lot on the downhills, but I developed large blisters and lost three toenails, which was rather unpleasant (I didn't get feeling back in one toe for six months.) I'm thinking that maybe the DMX's were just too flimsy for the trail and let my feet move inside them too much. What are your suggestions for other shoes to consider this time around? Mike Luechtefeld Dallas, Texas

After spending all my life camping in the mountains of the eastern United States, I've fallen in love with the southwest Texas desert, and I'm in the process of learning about those techniques and equipment that will work in that very different environment. No trees, blazing sun, the ground too hard to set stakes, fairly constant strong winds... The first problem to solve would be creating some shade... My Integral Designs Siltarp, which works great in the forests of Virginia, is useless as a sunshade, being almost transparent. Are there any tarps out there that would be suitable for sunshade duty, or is a piece of black six-mil poly my best bet? Bill Stell Charlottesville, VA

What's your take on Backpacker's Pantry Outback Oven? Does the Outback Oven really bake well and also conserves fuel for cooking traditional grub? After a zillion meals of mac and cheese, ren, gorp, and dried fruits, the Ziplocs carrying the food start looking more appetizing then the food within. The idea of dining on hot cinnon rolls, fresh pita bread, pot pies, or (gasp!) brownies does make me wonder if the Outback Oven really works or if it's just another ravenous hikers delusions? Ed Beaudry Laurel, Maryland

Years ago you recommended The North Face Snowshoe sleeping bag to me, just the ticket for a dp 58 hours in Lapland's freezing rain! Since your record is one for one, I seek your advice again for a compact, light sleeping bag (down is out due to allergies) to use when backpacking in Croatia in August. We'll be sleeping hut-to-hut while walking in the countryside, while also spending some time in cities. Do you think Design Salt's silk liner is good enough for such a trip, or do we need an ultralight sleeping bag? Jan Helsinki, Finland

I would like to know what the difference is between Marmot's 800-fill Couloir and 600-fill Never Summer sleeping bags if they both have a rating of zero-degrees. I'm going to Patagonia in January and would like to know which bag you would use, although I'm not yet sure what elevation I'll be at. Hans Norton, Massachusetts

What's the scoop on Eureka's Zeus EXO line of single-wall backpacking tents? They're inexpensive, light for the square footage, and look to have the se super-quick setup as the larger Eurekas. Do you have any info on how well these tents vent? Bill Charlottesville, Virginia

What tools do I need, and how do I build a good snow cave for winter camping in the Colorado Rockies? Daniel Denver, Colorado

I often ski and snowshoe in the Adirondacks backcountry, but my back always gets soaked under my pack whenever I'm going uphill. I have tried different layers to avoid the wetness, all to no avail. What do you recommend to keep my back comfortable? Ian Lake Placid, New York

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

I'm hiking the Grand Canyon rim to rim this spring, and I'm wondering what footwear to use. I like the lightness and cushioning of the trail runners that I've been using for my ten-mile training hikes, but I'm wondering if I need something a little more burly for my unsteady legs over the course of the 24-mile hike. Any thoughts on the Lowa Tempest? Jay Phoenix, Arizona

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

I wondering what binoculars you'd recommend for ge viewing in Africa. This will be for use on open plains and in thick bush, both when I'm on the go and standing still. I'm considering either the Leica Duovid 8+12x42's or Swarovski EL 8.5x42's. Bertus Calgary, Alberta

I know it's only August, but I have recently taken up running and looking ahead to the looming Ottawa winter. In preparing to outfit myself, I have been doing some reading about soft-shell jackets. The claim seems to be that I won't need to do the usual layering job with one of these—the soft shell can do it all. Is this right? Would a soft shell be the answer to a big part of my winter running wardrobe? Eric Ottawa, Ontario

I'm going overseas for approximately two years. Unfortunately, there'll be no camping opportunities the whole time. Before finding out I was off, I purchased a new tent, sleeping bag, and backpack. What's the best way to store this gear so it's as good as new when I get back? Gil Beaumont, Texas

What do you know about the "Stealth Can" and its effectiveness? From what I read, it's impenetrable to bears and seals in odors to throw animals off the scent. I like the idea of pre-empting animals from entering cp, rather than "teasing" them with food they can smell but not reach. Mark Ewing, New Jersey

Will boiling or adding chlorine dioxide to water neutralize all organic chemicals (i.e., industrial waste)? Also, should you filter water after using iodine or chlorine dioxide to purify it? Does ViralStop (from SweetWater) kill anything other than viruses? Basically, what's the simplest, lightest way of neutralizing EVERYTHING? Seyil Toronto, Ontario

My sweetie and I are going to Everest's Khumbu Icefall this December, where it's likely to be numbingly cold. I'd like to buy her a toasty parka for this trip and have homed in on Feathered Friends' Icefall and MEC's Frobisher. But will those jackets be significantly warmer than our current 550-fill REI parkas? Should I pay for the 800-fill down or Nextec Epic (apparently the best thing since somebody figured out how to shear a sheep) if I go with Feathered Friends? Or should I be looking at other parkas? Robert Fairview, Oregon

I've noticed a strange paradox in my personality. When I go out to the woods, sitting in some remote beautiful locale I often in want of one thing: a margarita. I've often theorized different devices that I could construct to make a blender but nothing ever made sense. And then I found the GSI hand-cranking Vortex Blender. While I would never take this backpacking (OK, maybe on a day trip to be fancy in front of my exhausted friends) I would definitely be interested in it for kayak camping and car camping—so long as the ice lasts. But does the thing actually work? Or is this really a doomed fantasy of mine? I'm skeptical about the amount of effort this thing would take to crunch up ice. I'd love to pop this out and be a hero. Brian McCarthy Glendale, California

Long time reader, first time questioner: I have long been a fan of liquid-fuel stoves, but recently read your advice about the difficulty in obtaining white gas products abroad ["Do they sell white gas for stoves in Europe?"]. I about to head out on a nine-month round-the-world trip, so would like to take along a reliable canister stove. Do you have any information on which canister stoves will mate with the multitude of international propane canisters that I'm likely to find? Europe and Oceania are my probable destinations. Aaron Green Bay, Wisconsin

I'm interested in testing the triathlon "waters." Can you suggest any good bikes for a beginner triathlon biker, say, for under $1,000? Gary Quito, Ecuador

Do you have any tips for taking a dog on trail? I'm taking my dog on her first trip and want to protect my gear without constantly worrying about it. Are those packs dogs wear a good idea? Will she dage the inside of my tent? Kieran Hosey Frankfort, Kentucky

I'm looking for a pair of Gore-Tex mountaineering pants that I can use snowboarding in the Alps, climbing in rainy Scotland, or cross-country skiing in Norway—all without maxing out my credit card. Any suggestions? Jakob London, United Kingdom

I recently unpacked my tent to be hit by a powerful smell of chemicals and mold, so bad that it gives me headaches and I can't sleep in the tent. Could I just wash it with some mild soap to get rid of the stink? I believe that the ses were sprayed with some sort of leakproof sealant, so I think that's why it smells. Janie Kuala Lumpur, Malaysia

I have been contemplating hiking the Appalachian Trail. Having spoken to a number of through-hikers, I'm told that many are using homemade alcohol stoves made from soda cans. Can you give me your take on alcohol stoves? Have you had any dealings with an alcohol stove known as the Trangia? Mark New York City

How do I wash the sweaty odor from my polypropylene toque? I used Wisk liquid detergent without success. The toque is clean but it still smells badly. I need help. Alexander Do Toronto, Ontario, Canada

Just wondering if you know of any companies that do any sort of maternity outdoor wear, the actual technical garb. I realize that a pregnancy only lasts so long and we already have to add to our wardrobe as it is, but it just so happens that my few biggest months will be the hiking season. I have tried on some of my other gear and think a few pieces will work, but is there a manufacturer who makes stuff that will actually let me and the baby hike comfortably? Charlotte Winnipeg, Manitoba

I have an early-nineties GT mountain bike with a titanium fre. It's still a good-looking, lightweight bike, but its rear U-brake has no real power. Are there any compatible brakes with better grip, or are there any pads with magical powers? Andreas Reno, Nevada

I've read your praise for the Yashica T4 point-and-shoot camera and was attempting to locate a refurbished unit on the web, when, lo and behold, up pops the new Yashica T4 Zoom with a Carl Zeiss Lens (28mm to 70mm). In the wilderness, I've always managed to catch more pictures than fish, and would appreciate your thoughts on a lightweight point-and-shoot for my arduous outdoor adventures. Scott Maple Valley, Washington

Why did Sno-Seal fall out of favor? I kept a pair of heavy hiking boots alive for years with some welt dressing and this stuff. Joe Midland, Texas

I'd like to buy my dad a comfortable bike for exercise and recreation. He doesn't like to be hunched over a bike because he has a temperental back. He also needs a comfortable seat. Is there anything for $800 or less? Joe Edison, New Jersey

I have been searching online for the past few hours for piece of equipment that I believe I saw in some gear magazine (the mail order kind). I will describe it: digital watch, with a compass, stopwatch, etc., and a lighter, signal mirror, and small knife blade with various other attachments. It hung from a lanyard and cost around $100.00 or so. Can you help me find a name for this product or where I might be able to order one? Thanks for the help. Bradford Hammar Charleston, West Virginia

For the second year in a row, we have just returned from our annual spring camping trip in southern Utah, and because of blowing dust, the zippers on the tent are EXTREMELY difficult to operate. Are there any methods for treating "dust-laden" zippers in the field? Also, now that we're back, we've washed the tents, sprayed silicon on the zippers—they're better, but still not like they used to be. Any suggestions? I've been told to buy some "zipper wax" to carry camping next time, but no one here seems to carry it. Thanks! Kirk Astroth Belgrade, Montana

I have a 2001 Honda Civic coupe and will be making a cross-country trip. I looking into a cargo rack to outfit my Civic but I'm not sure how much to spend and which brand to go with (Thule, Yakima, or Saris.) The rack will probably only be used for a rooftop storage bag. If you could suggest a rack model I would greatly appreciate your help. Pete Lptey Fairfax, Virginia

I just returned from Mount Rainier with a rope I had bought specifically for this trip but with the intention of using it for rock climbing. I hate to think of the number of times I saw it go under foot. None of my ropemates put a crampon into it, but I sure don't see myself taking a lead fall with it now, especially 100 feet up. But what about glacier travel? Certainly the guides on Rainier leading newbie mountaineers don't replace their ropes after every trip. Is there anything I can do to physically check the condition of my rope and feel comfortable using it for glacier travel? I truly hate to toss a rope after one trip.

I'm really getting into ultralight backpacking, and I hope to do a through-hike of the AT or PCT in the next few years. I do all of my backpacking in the summer, but my Marmot sleeping bag is too heavy (and warm). What choices are there for a light, compressible bag costing less than $100? If there are no bags in this range, would you recommend removing some of the down from my Marmot bag to make it lighter? Tom Bellevue, Washington

Why don't sleeping bag manufacturers make the outer shells on their bags from the se materials used in waterproof-breathable jackets? Thanks for your time and answer. Steve Youngsville, Louisiana

My wife and I like to share a cozy sleeping bag while kayak camping, but we both own "pre-marriage" bags that don't zip together. What we want is one bag wide enough for two, made from synthetic material (since it might get wet), and with a temperature rating of about 20 degrees. Also, as we're both about five-foot-five, it would need to be on the short side. Is our only choice to have a bag custom-made? Andy Kirkland, Washington

What are the best winter socks for snow skiing? When I ski, I rent boots and skis, but I find my feet always get cold. What socks should I get to make sure my feet stay warm? Should I use sock liners in addition to high quality wool socks? Brad Chapel Hill, North Carolina

Hailing from sunny California, this is my first year in college in Boston. Here's my situation: New England weather is windy, chilly, and often wet. I need a jacket that will get me through the winter but also look good around town. However, once I buy this jacket, I'll still need money to eat. What can you recommend that won't break the bank, i.e. as close to $100 as possible? Kyle Boston, Massachusetts

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

As a frequent trail runner, I looking for a backpack designed with running in mind. I would like something with ple storage for additional layers and supplies, certainly larger than a lumbar pack. Any suggestions? Connor Ann Arbor, Michigan

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

What is your opinion of two-way radios for climbing and skiing? What features should I look out for when selecting one? Tjaard Breeuwer Eindhoven, Holland

I've collected the very best ensemble of outdoor gear, but I still require one last item: sunglasses! Price is no object, but quality is. I need the best all-purpose outdoor fres that are compatible with prescription lenses. Cebe comes to mind, but do you have any other suggestions? Paul Boulder, Colorado

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