ultralight sleeping bag reviews

Feathered Friends Snowbunting EX 0 sleeping bag.

Review: Feathered Friends Snowbunting EX 0 Sleeping Bag

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Winter Sleeping Bag
Feathered Friends Snowbunting EX 0
$789, 2 lbs. 12 oz. (regular)
Sizes: regular and long ($644)
featheredfriends.com

On chilly nights of camping, nothing’s more popular than a fat sleeping bag. When sleeping outside in winter—or wintry temperatures—the Snowbunting EX 0 has become my bag of choice. Most recently, I slumbered peacefully and quite comfortably through three December nights without a tent outside a backcountry yurt in Idaho’s Boise Mountains—one of those nights dropping into the single digits Fahrenheit, and another featuring several hours of snow falling intermittently directly onto my bag, inside which I remained quite warm and dry. Super warm and well built, at a moderate weight, this bag functions well, depending on the user, for trips in temps from around its 0-degree rating to around freezing.

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Therm-a-Rest Hyperion 32F/0C sleeping bag.

Review: Therm-a-Rest Hyperion 32F Sleeping Bag

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Ultralight Sleeping Bag
Therm-a-Rest Hyperion 32F/0C
$490, 1 lb. 1 oz. (regular)
Sizes: small, regular, long
rei.com

Why spend more money on a sleeping bag? Logical question, of course. But for any backpacker eager to shave a pound or more and significant gear volume from his or her backpack, an ultralight down bag offers one of the best ways of realizing that objective—as well as delivering maximum warmth per ounce. And one of the lightest and most compact bags in this category, Therm-a-Rest’s Hyperion 32F/0C, measured up in every way on a six-day backpacking trip in the Grand Canyon in May; a six-day float trip down Idaho’s Middle Fork of the Salmon River in July; a three-day hike on the Teton Crest Trail in August; a five-day, late-summer hike in the Wind River Range; trekking hut-to-hut on New Zealand’s Routeburn and Milford tracks in late spring; and on chilly, rainy spring nights that pushed the bag’s limits camping in May in Idaho’s City of Rocks National Reserve.

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The Sierra Designs Nitro 800 20-degree sleeping bag.

Review: Sierra Designs Nitro 20-Degree Sleeping Bag

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Three-Season Sleeping Bag
Sierra Designs Nitro 20-Degree
$320, 1 lb. 15 oz. (regular)
Sizes: men’s regular and long, women’s regular
sierradesigns.com

Choosing between sleeping bags can sometimes feel like getting the names of identical twins right—they look an awful lot alike. With bags, you can compare certain key specs: temperature rating, type and amount of insulation (or fill), total weight, and, of course, the price. Using those metrics, the new Sierra Designs Nitro bags look like a pretty good value, so I slept in the 20-degree Nitro 800 while camping on some cool and windy May nights at Idaho’s City of Rocks National Reserve, and on a three-night, 39-mile backpacking trip in Wyoming’s Wind River Range in mid-September, to see if its performance matches its impressive numbers.

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The Western Mountaineering Summerlite sleeping bag.

Review: Western Mountaineering Summerlite Sleeping Bag

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Western Mountaineering Summerlite sleeping bag.
Western Mountaineering Summerlite sleeping bag

Ultralight Sleeping Bag
Western Mountaineering Summerlite
$420, 1 lb. 3 oz. (regular)
Sizes: short, regular, and long
backcountry.com

The lightest sleeping bags for summer camping—meaning for temperatures from the 50s Fahrenheit to around freezing—rarely include features like a hood, a draft tube, and a two-way, full-length zipper. The Summerlite has all of those while weighing in at barely north of a pound and remaining true to its 32-degree rating. On a weeklong, late-March trip in southern Utah, I slept in it for nights of car camping and backpacking in the Dirty Devil River canyon, when the low dipped into the high 20s, and found it warm, spacious enough, and supremely packable.

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Gear Review: MontBell UL Super Spiral Down Hugger #3 Bag

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MontBell UL Super Spiral Down Hugger #3

Sleeping Bag
MontBell UL Super Spiral Down Hugger #3
$339, 1 lb. 7 oz. (regular), $359, 1 lb. 9 oz. (long)
Sizes: regular and long
Montbell.us

We tend to buy a sleeping bag based primarily on temperature rating, price, and weight, ignoring a key characteristic that will affect how well you sleep in it as much as its warmth: comfort. I’ve slept in many bags—especially ultralight models—that are cut so narrowly to shave grams that they felt like a straitjacket. Montbell’s UL Super Spiral Down Hugger #3 provides superior comfort through a simple but unique feature: elasticized baffles that stretch and contract with your movements. The bag effectively acts like a second, much thicker and warmer layer of skin, moving wherever you move without inhibiting you at all.

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