Backpacking Sleeping Bag Reviews

The Sierra Designs Cloud 800 35-Degree sleeping bag.

Review: Sierra Designs Cloud 35 Sleeping Bag

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Ultralight Sleeping Bag
Sierra Designs Cloud 35
$300, 1 lb. 7 oz. (men’s regular)
Sizes: men’s regular and long (35- and 20-degree), women’s 20-degree (one size)
sierradesigns.com

Mummy-style sleeping bags deliver high warmth efficiency for their weight because they trap heat so well—but can sometimes feel like they’re trapping you inside, too. Backpacking quilts mimic the feeling of sleeping under a comforter at home, but may too easily let cold air underneath on chilly nights outdoors. With its zipperless design and integrated comforter in the bag’s upper half, the Sierra Designs Cloud 35 bag achieves the strengths of mummies and quilts without their weaknesses.

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The Therm-a-Rest Parsec 32 sleeping bag.

Review: Therm-a-Rest Parsec 32 Sleeping Bag

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Ultralight Sleeping Bag
Therm-a-Rest Parsec 32
$400, 1 lb. 9 oz. (regular)
Sizes: unisex small, regular, and long
moosejaw.com

It was an amazing spot to sleep under the stars for our last night on an early-April backpacking trip in the Grand Canyon: perched on a plateau high above the Inner Gorge of the Colorado River, gazing across the canyon at the Tonto Plateau and South Rim. We waited until dusk had nearly faded to darkness to lay out our sleeping bags atop our completely exposed, flat cowboy-camping ledges, hoping the relentless, strong wind would abate with evening’s arrival and not threaten to launch our bags to New Mexico—but it didn’t. So I burrowed inside my Therm-a-Rest Parsec 32 for warmth—and only opened my eyes once or twice briefly during the night, enough to glimpse the brilliant glow of the Milky Way.

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The Mountain Hardwear Bishop Pass 30 sleeping bag.

Review: Mountain Hardwear Bishop Pass 30F Sleeping Bag

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Sleeping Bag
Mountain Hardwear Bishop Pass 30F/-1C
$245, 1 lb. 12 oz. (regular, 72-inch)
Sizes: men’s and women’s regular and long
backcountry.com

On the second night of a four-day, roughly 50-mile backpacking trip in Yosemite in the last week of September, when nights dipped into the 40s Fahrenheit, I laid my bag and pad out under the stars, without a tent, in one of the neatest spots I’ve ever slept outside: on a dry granite slab between two braids of a creek, lulled by a tiny cascade just a few steps from my head. And all night, a strong, cool wind blew down that creek valley, prompting me to zip deeply inside the Bishop Pass 30F/-1C. Despite that wind chill, I stayed warm and slept like a baby.

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Mountain Hardwear Phantom 0 sleeping bag.

Review: Mountain Hardwear Phantom 0 Sleeping Bag

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Winter Sleeping Bag
Mountain Hardwear Phantom 0
$680, 2 lbs. 9 oz./1162g (regular, 72-inch)
Sizes: short, regular, long
backcountry.com

The forecast made me sit up and wonder: Will my bag be warm enough? For the three nights in late December that I planned to spend in a tent in Idaho’s Boise Mountains, lows would drop into the teens and single digits Fahrenheit—slipping below the “comfort” rating and approaching the “limit” rating of my Mountain Hardwear Phantom 0. And this on my maiden voyage with the bag; I had not used it yet. As it turned out, I had nothing to worry about with this extraordinarily warm and packable, ultralight winter sleeping bag.

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Nemo Riff 30 sleeping bag.

Review: Nemo Riff 30 Sleeping Bag

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Sleeping Bag
Nemo Riff 30
$360, 2 lbs. 1 oz. (men’s regular)
Sizes: men’s and women’s regular and long
backcountry.com

Let’s face it: Sleeping in a lightweight or ultralight mummy bag isn’t so deliciously comfy that you’d do it on your bed at home—we generally reserve that elusive pleasure for the more obvious rewards of backpacking through wilderness. But the space and features of Nemo’s Riff, available in models rated to 30 and 15 degrees, just might brighten your opinion of the comfort of bags designed for the backcountry.

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