rolling out a sleeping bag in a tent
(Photo: Evan Green)
2023 Summer Gear Guide

The Best Sleeping Bags of 2023

Whether you’re bedding down in a state forest campground or deep in the wilderness, these nine sleeping bags will keep you warm and cozy

rolling out a sleeping bag in a tent
Evan Green

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Choosing the right sleeping bag is one of the most personal decisions you can make on your quest to complete your backpacking or car camping kit. Between body shape, size, temperature preference, and environment, finding the “right” bag is a different experience for every hiker. This year, these nine cozy cocoons stood out from the crowd as the very best for almost every type of adventurer.

The Winners at a Glance

Best for Backpacking

Most Comfortable: Patagonia Fitz Roy Down Sleeping Bag 30 Degrees

Most Packable: Big Agnes Pluton UL 40

Best Value: Big Agnes Greystone 20

Best for First-Timers: The North Face Trail Light Down 20

Most Affordable Quilt: EMS Anomaly Ultralight 30-Degree Backpacking Quilt

Best for Car Camping

Best Wearable Bag: Mountain Hardwear Yawn Patrol 30F

Best Quilt for Couples: Sea to Summit Tanami Tm II 35F

Best Bag for Couples: REI Siesta Hooded 20 Double Sleeping Bag

Best for Finicky Sleepers: Zenbivy Core Bed 25F Synthetic

How We Test

Number of Testers: 20

Number of Nights Slept Outside: 75

Coldest Night: 18 degrees with three inches of snow

Warmest Night: 102 degrees

Highest Elevation Tested: 9,000 feet

Testing sleeping bags is a challenge. It happens in slow-motion. We all have different sleep routines, positions, and preferred temperatures. Add to that environmental variables like humidity and altitude, and it’s nearly impossible to create a stable, objective testing environment. That’s why we started the process in mid-August, completed it in early November, and rotated bags to testers in climates from the semi-tropical heat of South Texas to the alpine desert of New Mexico to the boreal forest of Minnesota to the Canadian Rockies of British Columbia.

We also chose 20 testers with varied interests and outdoor experience, ranging in age from 18 to 60. One is a recent high school graduate on his way to U.S. Army combat medic training. Others are veteran ultra-hikers, runners, and cyclists whose priority is to pack light. Two more are longtime paddlers who care less about weight and more about staying warm and dry in a wet environment.

When each tester finished using the bag, they filled out a feedback form gathering thoughts, critiques, and opinions related to each item’s warmth-to-weight ratio, ventilation options, zipper quality, comfort, and many other factors. Then we compared notes and picked the winners.

By far the best part of the process: We slept outside on days we otherwise would have been tucked into our own cozy beds, which led to plenty of Milky Way encounters and at least one night of shimmering Northern Lights.

Meet Our Lead Testers

Stephanie Pearson

Backpacking sleeping bag and pad category manager Stephanie Pearson has slept in a cave in Tasmania, in a tent at Mount Everest Base Camp, and under the stars while lost in the Australian Outback. She’s a fitful sleeper.

Ryan Stuart

After hundreds of nights sleeping under the stars, car camping sleeping bag and pad category manager Ryan Stuart sleeps better in a sleeping bag than he does at home. Based on Vancouver Island, he approaches camping with the same laid-back vibe his island home is known for. As long as it’s quiet, he doesn’t care whether it’s on a beach, a lake, or the middle of a logging road.

Patrick Greehan

Patrick Greehan is a coach for the Duluth Devo Mountain Bike Program. He currently races gravel, mountain, and fat bikes with a focus on long distance and ultra events. He is an avid bikepacker who takes trips year-round in Northern Minnesota.

Tim Pearson

Tim Pearson is a retired U.S. Army First Sergeant based in San Antonio, Texas, with 22-plus years of experience sleeping outdoors in the field in austere environments like Iraq and Afghanistan.

Joshua Pearson

Joshua Pearson lives in San Antonio, but recently enlisted as a combat medic for the U.S. Army. After basic training, he’ll spend four years stationed in Alaska. He spends his summers outdoors hiking and solo camping.

The Reviews: The Best Backpacking Sleeping Bags of 2023

Most Comfortable: Patagonia Fitz Roy Down Sleeping Bag 30 Degrees ($429 in regular)

Patagonia Fitz Roy Down Sleeping Bag 30 Degrees
(Photo: Courtesy Patagonia)

Weight: 1.8 lbs. (regular)
Size: Short, regular, long (unisex)
Pros: Lightweight and packable; front zip; no cold-spots; excellent hood
Cons: Pricey

We were expecting a good night’s sleep in the newly updated Fitz Roy, but we weren’t expecting to snooze until 9 am into broad daylight on a perfect September Minnesota morning. Blame the late start on the bag’s improved engineering, which eliminates cold spots: The down is encapsulated with horizontal baffling on the head, shoulders, and feet to control migration, and vertical baffling in the middle to keep the weight as low as possible. While it didn’t affect our sleep experience, the new Fitz Roy now checks all the eco-boxes: fair-trade certified, made from 100-percent recycled 20-denier nylon-ripstop coated with a PFC-free DWR finish, and stuffed with 800-fill traceable down. When packed, the Fitz Roy is roughly the size of a football, about two-thirds the bulk of comparable 800-fill mummies.

With an easy-to-grasp three-way zipper straight up the center, ventilating anywhere from head to toe was a cinch. The placement allowed the most restless sleepers among us to angle into a comfortable side position. “The center zip is super nice for regulating temperature without extraneous foot zippers,” reported tester Ariella Gintzler, who slept in the bag in sub-freezing temps at just over 9,000 feet along the CDT in New Mexico. “Side-zip mummy bags can make it hard to vent without sliding out of the bag. I stayed put in the Fitz Roy.”

Another feature that sets this bag apart from other top-end mummies? Its hood. That’s not surprising, considering Patagonia’s reputation for perfecting jacket hoods, like on the much-loved Grade VII Belay Parka. Uncinched, the Fitz Roy’s hood holds enough structure to feel protective, yet opens wide enough to view the entire Milky Way. When cinched into a tight crescent with the two drawstrings at the neck, the baffling around the hood keeps out the cold, but the exposed area is still wide enough to avoid claustrophobia and, best of all, field-of-view is still unimpeded.

Bottom Line: The Patagonia Fitz Roy is an all-around excellent, super-comfortable bag.

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Most Packable: Big Agnes Pluton UL 40 ($350)

Big Agnes Pluton UL 40
(Photo: Courtesy Big Agnes)

Weight: 1 lb (regular)
Size: Regular, long (unisex)
Pros: Very light, very packable; half-hood adds extra warmth
Cons: A fairweather summer bag

“This excelled at everything I would want in a sleeping bag—packability, temperature control, and comfort,” proclaimed Patrick Greehan, a veteran bikepacker who has raced tough events like Minnesota’s Arrowhead 135, where the weight-to-warmth ratio of an ultralight bag can mean the difference between dropping out or finishing a race. The new Pluton, which uses the same 850-fill water-repellent DownTek and boasts the same 59-inches of girth around the shoulders as the last version—wide for such an ultralight bag—uses a beefier 12-denier nylon ripstop fabric coated with a PFC-free DWR finish. That fabric update results in a softer, less crinkly bag that still weighs a pound, compresses into roughly the size of a Nalgene, and can easily slide into a front handlebar pack. Other elements that impressed Greehan, who normally packs a quilt, were the two-way zipper, which allowed him to better regulate his temperature at head and feet, and the half-hood, which still necessitates wearing a beanie on colder nights, but added warmth and comfort around the neck (unlike a quilt) to this otherwise minimalist bag.

Bottom Line: The Big Agnes Pluton UL 40 is an ultralight, ultra packable bag for summer bikepackers and weight-conscious hikers

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Best Value: Big Agnes Greystone 20 ($270)

Big Agnes Greystone 20
(Photo: Courtesy Big Agnes)

Weight: 2.2 lbs (Regular)
Size: Regular, long (men’s and women’s)
Pros: Impressive warmth-to-packability ratio; affordable
Cons: Minimal hood

The new mummy-style Greystone has what might be the golden packed size-to-warmth ratio—plus, it won’t break the bank. It’s filled with Bluesign-certified 600-fill water-repellent down surrounded by a soft recycled nylon shell and gossamer-smooth lining. It all scrunches down to an impressive 8.5 x 8.5 inches, roughly one quarter smaller than the other 20-degree bags we tested, thanks to a less bulky, minimalist hood. Most of our testing took place in the 30- to 50-degree range, but for three nights, testers used the bag on a freakishly cold late October camping trip on the flanks of 11,305-foot Mount Taylor, where the low temperature dropped to 18 degrees. With the help of warm layers and a hat, our tester survived those nights in comfort, even in temps two degrees below the bag’s recommended temperature. That said, this bag—with its average fill power and slim hood—is most at home in moderate temps between 25 and 40 degrees. For most summer and early shoulder-season backpacking trips, the Greystone 20 is a bargain.

Bottom Line: The Big Agnes Greystone 20 is a packable bag at an affordable price.

Men’s Women’s

Best for First-Timers: The North Face Trail Light Down 20 ($220)

The North Face Trail Light Down 20
(Photo: Courtesy The North Face)

Weight: 2.2 lbs (m’s regular)
Size: Short, regular, long, extra long (men’s) / regular, long (women’s)
Pros: Affordable; fully-featured
Cons: No full-length zipper; bulky

It’s easy to get caught up in a numbers game when testing sleeping bags. The lower-weight, higher-fill, uber-compressible bags generally get all the glory. At 2 pounds, 4 ounces, and with 600-fill down, this mummy wins in neither category, but our testers were impressed with the higher-end bells and whistles that come at a fraction of the price, like a well-designed, fully-insulated hood with an elasticized cinchable collar, two vertical baffles running up and down the bag’s sides to reduce cold spots and retain loft, and extra synthetic insulation around the toes for added warmth in the vaulted foot box. And like many far more expensive bags, sustainability is at its core: The DWR-finished nylon body, silky 30-denier nylon lining, and down insulation are all 100-percent recycled. “It’s hard not to love this bag,” says Elisabeth Kwak-Hefferan, Outside’s women’s shells category manager, who tested it over a few sub-freezing days on the CDT in New Mexico. “The hood was big enough to stuff my puffy in for a pillow and also accommodate my head (in a hat). It’s also cut big enough for me to stuff my next day’s clothes inside for preheating, but not so big that I struggled to stay warm.” Our biggest gripes? The bag’s sturdy, two-way zipper ends at the knee, which makes it nearly impossible to ventilate the feet. It’s also bulky for backpackers. With top notch features, however, we don’t mind the extra pack space considering this bag’s price point.

Bottom Line: The North Face Trail Light Down is a featured-studded bag at an entry-level price.

Men’s Women’s

Most Affordable Quilt: EMS Anomaly Ultralight 30-Degree Backpacking Quilt ($260)

EMS Anomaly Ultralight 30-Degree Backpacking Quilt
(Photo: Courtesy EMS)

Weight: 1.2 lbs (regular)
Size: Short, regular, long (unisex)
Pros: Converts to a comforter for warm nights; adjustable feet and neck options; affordable
Cons: Too cold for shoulder seasons; straps don’t fit all pads

Getting into the ultralight backpacking game is expensive. And, counterintuitively, minimalist quilts can be one of the priciest line-items. Not the EMS Anomaly. For $260, you get a fully-featured quilt for summer adventures that weighs just over a pound and packs down to the size of a Nalgene—comparable to quilts that cost $100 more. San Antonio-based ultrarunning tester Tim Pearson rarely uses a full sleeping bag, especially in the 90-plus-degree heat of Texas summer nights. But as a veteran who was forced to spend many nights in countries with snakes, scorpions, and other nocturnal enemies, he isn’t wild about sleeping under the stars with limbs fully exposed. “The Anomaly was spectacular,” said Pearson, who praised its ability to pull double-duty: Flayed open, the 850-fill, 20-denier ripstop nylon quilt can be thrown over the body just like a comforter. When the temperature dipped down near the 30-degree mark in northern Arizona in October, Pearson used the drawcord closure at the feet, a center zipper on the bottom half, and a drawcord and snap-closure at the neck to trap heat and keep out drafts. The quilt was still warm, especially when Pearson used the sliding toggle straps that secure the quilt to the sleeping pad. One shortcoming? The pad straps didn’t fit some of the larger pads we tested.

Bottom Line: The EMS Anomaly Ultralight is a fully-featured summertime quilt at an outstanding price

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The Reviews: The Best Car Camping Sleeping Bags

Best Wearable Bag: Mountain Hardwear Yawn Patrol 30 F ($275)

Mountain Hardwear Yawn Patrol 30 F
(Photo: Courtesy Mountain Hardwear)

Weight: 2.1 lbs
Size: Regular, Long
Pros: Convenient temperature regulation; Packability
Cons: More restrictive than some rectangular bags

Most sleeping bags that also claim to be loungewear tend to be more on the gimmicky end of the spectrum. Not the Yawn Patrol, which is a sleeping bag, quilt, and extra long poncho all in one, thanks to clever zipper design. One smooth-running zipper extends from the top of the bag to the feet to split it into a quilt. Another runs a third of the way down for easy entry and to create sleeves for reading or drinking while inside the bag. Josie Boulding, a Union Bay, B.C.-based tester, loved the bag’s poncho mode. “I could wear the whole thing in camp to stay warm around the campfire,” she says. Tougher, 45-denier nylon protected the bottom of the bag from dirt, while a lighter-weight 30-denier nylon top shell and the interior were both soft next to skin. When she actually slept in the nearly rectangular bag, the insulated hood with a pillow pocket, phone pocket, draft collars, and 650-fill down kept Boulding toasty and all those zippers gave the bag a huge comfort range, from the 60s to its 30-degree limit. Bonus: At just 2.1 pounds, it can be pressed into service for short backpacking trips.

Bottom Line: A versatile sleeping bag that truly pulls double-duty.

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Best Quilt for Couples: Sea to Summit Tanami Tm II 35F ($399)

Sea to Summit Tanami Tm II 35F
(Photo: Courtesy Sea to Summit )

Weight: 2.6 lbs
Size: Regular
Pros: Works for singles and doubles; lightweight
Cons: No material to fully close it

If the idea of a double sleeping bag sounds like an argument waiting to happen, the Tanami might be the answer to your relationship’s camping woes. The 80-by-82-inch quilt isn’t quite as expansive as a typical queen-size comforter, but it’s plenty big for category manager Ryan Stuart and his partner to sleep comfortably on a double-wide pad with fabric to spare. “When I inevitably got too hot, I could pull some covers off, while my wife could snuggle deeper,” Stuart says. A drawcord at the bottom snugs the quilt to a mattress, preventing drafts from penetrating and the quilt from shifting. Closer to the bag’s temperature limit, the couple pulled them both and played footsie. Loops on the quilt’s perimeter allow campers to strap it to a pad or close it into a bag (with additional hardware.) Sleeping in it solo, Stuart cinched up the bottom and burritoed his way in. Even in temperatures close to the bag’s rating, he was comfortable, thanks to 24.7 ounces of water-resistant 750-fill down. And while it’s by no means ultralight, the 30-denier exterior and 20-denier interior mean the Tanami is lightweight for two and packs down into a 10-liter stuff sack. For couples that prefer a quilt to a bag, it’s a no-brainer for summer car camping or backpacking.

Bottom Line: The Tanami Tm II 35F is a great option for couples who don’t want to share a double sleeping bag.

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Best Bag for Couples: REI Siesta Hooded 20 Double Sleeping Bag ($239)

REI Siesta Hooded 20 Double Sleeping Bag
(Photo: Courtesy REI)

Weight: 7.8 lbs
Size: Regular, Long
Pros: Incorporates recycled material; Impressively warm
Cons: Bulky

When the thermometer dips, this is the bag you want to be snuggling in with your significant other. The Siesta reached edge-to-edge on a queen mattress when a tester and their partner used it in an unheated mountain cabin on the edge of Strathcona Provincial Park on Vancouver Island. Stuffed between the exterior and interior layers of 75-denier recycled polyester fabric are three weights of recycled synthetic, Bluesign-approved insulation: 160 grams on the back; 120 grams in the draft collar, and 220 grams on the top. The top and bottom are layered in a shingle pattern to help prevent cold spots. When snuggled into the oversized neck collar with the zippers closed, testers found the bag was true to its 20-degree rating. The couple had room to turn without elbowing the other and both had a chest pocket for stashing a phone or headlamp. Because each side of the bag has a two-way zip that extends to the bottom of the bag, they could vent top and bottom independently of each other. Bonus: If cohabitation doesn’t work out, the top and bottom zip apart into two individual quilts. The bag’s weak spots? It doesn’t pack particularly well for storage (about two feet by 14 inches) and the insulated hood is small—while it stretches across the whole bag, wide enough to fit two home-sized pillows, it was shallow and barely covered our testers’s heads.

Bottom Line: A warm, affordable double bag that works all the way down to its three-season rating.

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Best for Finicky Sleepers: Zenbivy Core Bed 25F Synthetic ($209)

Zenbivy Core Bed 25F Synthetic
(Photo: Courtesy Zenbivy)

Weight: 3.2 lbs
Size: Regular, Large, XL
Pros: No zippers to deal with; roomy; packable
Cons: Hooks are hard to adjust

We were already fans of Zenbivy’s hybrid bag design: a comfortable, packable sleeping bag-quilt fusion. But not everyone was onboard to drop $300 for a somewhat experimental sleep setup that divides the traditional sleeping bag into a quilt-style top and a hooded, fitted sheet that slips over a sleeping pad. With the Core Bed, Zenbivy made the barrier to entry lower by using a generic synthetic insulation and making the sheet portion optional. With the sheet included, it weighs about a pound more than the original version, but costs $100 less. The sheet is a soft-as-cotton, 50-denier pongee fabric that fits a sleeping pad up to 3.5 inches thick and connects to the 20-denier quilt with nine color-coded hooks. It’s easy to set up outside the bag, but tough to adjust once snuggled in, although no one complained about the lack of zippers to snag. We mostly shimmied out of the top for pee breaks. When New Brunswick-based tester Paige Stuart set up the Zenbivy system on a breezy night, camping on the Bay of Fundy, she found it sealed out drafts as effectively as a full sleeping bag, but, because the quilt is fixed to the outline of the pad, she could easily switch sides without getting tangled. A hook near the bottom of the bag adjusted the roominess of the foot pocket from snug to wide-open. When she woke up a bit chilled (testers were comfortable down to about 30 degrees) she snuggled into the oversized neck baffle and slept soundly through the night.

Bottom Line: Like the freedom of a quilt, but want the cocoon of a traditional bag? This is the best compromise.

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How to Buy

Finding the ideal sleeping bag or quilt is a little like finding the ideal life partner. When you start looking, the options might seem overwhelming. But the more you focus on what you really want, the easier it is to narrow down. Here are four questions to help you find the perfect sleeping mate:

In What Season(s) Will I Use the Bag?

Bags generally fall into three temperature categories: Summer (rated 30 degrees F and warmer); three-season (rated between 15 and 20 degrees); and winter (rated 15 degrees and lower—some expedition bags are rated as low as -40 degrees). These temperature ratings are based on “average” sleepers and don’t consider external factors like the thickness and rating of your sleeping pad; climatic factors like wind or humidity; or how quickly your body regulates heat loss or gain. If you tend to prefer cold sleeping environments, err on the side of buying a higher temperature bag—you can always open zippers, but making a bag warmer requires extra layers.

What Activity Will I Be Doing?

Recreationalists who need ultralight gear, like bikepackers, thru-hikers, or ultra-runners will want a bag that offers maximum warmth for minimal weight—something they can stuff down to the size of a Nalgene and jam into a pack. Quilts are a popular choice for those trying to cut weight. For shorter backpacking trips or where weight isn’t a priority, you can find considerable savings and comfort in a bag that is slightly heavier or bulkier due to lower fill power or cheaper materials.

Car Camping vs. Backpacking Bags

Car camping is about comfort: look to prioritize roominess, fabric feel, and features, like pillow pockets and multiple zippers, rather than weight and packability. Cotton, fleece, or flannel-like interior linings will make sleeping that much more cozy than the usual polyester stickiness you experience with backpacking bags. Pillow pockets help corral those slippery suckers right where you want them. A pocket for a headlamp, phone, or watch is nice for keeping them close at hand. And extra zippers provide options for customizing warmth and lounging in camp.

What Type of Insulation Is Best for Me?

Down bags are generally warmer for their weight and more compressible than bags with synthetic insulation. But if down bags get wet, they lose insulating capacity and take longer to dry out than synthetic bags. Many manufacturers use down processed with a hydrophobic chemical that prevents it from absorbing as much water. Others keep the insulation dry with a water-repellant finish or fabric. Pay attention to fill power. That number measures the volume taken up by the amount of down in your sleeping bag; the more loft your sleeping bag has, the more efficiently it will trap warm air. It will also weigh less and pack down smaller than bags with a lower fill power rated to the same temperature. Synthetic bags are more affordable, and therefore an excellent choice for new campers who are unsure how often they want to sleep outside, or backpackers who are headed to wet environments.

How much space do I need?

Bags come in many shapes and sizes—rectangles, mummies, modified mummies, and double bags. Mummies are warmer and lighter-weight than rectangular bags, but can also be claustrophobic. Rectangular bags are excellent for restless sleepers who need to move and don’t have space or weight constraints. Some quilts can be opened up to act as comforters, although they require a warm sleeping pad and don’t come with hoods. Women-specific bags often come in modified mummy shapes to accommodate the curvier parts of a woman’s body. Doubles are simply a sleeping bag built for two, although many solo bags can be zipped together to create a double bag.

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Lead Photo: Evan Green

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