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A frosted grey sleeping bag unzipped on a pad in the right half of a tent, darker empty floor on the left

Sleep

Sleeping bags and quilts

Down mummies, synthetic backups, and quilts, matched to how cold you actually sleep.

Temperature ratings are limits unless the brand publishes an EN or ISO comfort number. Cold sleepers should buy about ten degrees warmer than the forecast low. A bag does not insulate the ground. The pad does that work.

Down wins on pack size in dry weather. Synthetic fill still works when it is damp. A quilt is lighter only if you sleep warm and will keep it strapped to the pad. Otherwise it is a draft with a high price.

How to choose

  • Fit length and girth to your body, not to the stuff-sack photo.
  • Treat a 30°F bag as a summer bag, not a shoulder-season bag.
  • A liner adds a little warmth and keeps the bag cleaner. It does not change the rating by twenty degrees.

Roundups

Gear in this category

A 15-degree down mummy bag lofted on a pad inside a tent
SleepREI Co-op Magma 15Most backpackers who want a returnable down bag15°F · Light for a 15°F bag · Mid to upper
A premium narrow down mummy bag lofted on a pad inside a tent
SleepWestern Mountaineering UltraLitePeople who will own one bag for years20°F class · Very light for the rating · HighOn Amazon
An open-back down quilt lofted on a pad inside a tent
SleepEnlightened Equipment RevelationWarm sleepers and side sleepers who hate mummiesQuilt · Lighter than a comparable bag · Mid to upper
A synthetic mummy bag lofted on a pad inside a tent
SleepMarmot Trestles Elite Eco 30Wet climates and bags that may get damp30°F · Heavier than down · Lower mid
A spoon-shaped down bag lofted on a pad inside a tent
SleepNEMO Disco 15People who hate mummy coffins15°F · Moderate · Upper midOn Amazon
A small-packing ultralight down mummy lofted on a pad inside a tent
SleepSea to Summit SparkFast-and-light hikers who sleep warmUltralight mummy · Very low · High
A 30-degree down mummy bag lofted on a pad inside a tent
SleepREI Co-op Magma 30Summer and warm shoulder nights for a cold sleeper30°F limit · About 1 lb 6 oz · Upper mid
A sewn-footbox down quilt lofted on a pad inside a tent
SleepEnlightened Equipment Enigma 20Side sleepers who stay on the pad20°F · About 1 lb 4 oz · Upper mid
A high-end down mummy bag lofted on a pad inside a tent
SleepWestern Mountaineering AlpinliteCold sleepers who want a narrow, warm down bag20°F class · About 2 lb · PremiumOn Amazon
A budget down mummy bag lofted on a pad inside a tent
SleepKelty Cosmic 20First cold nights on a short carry20°F · About 2 lb 10 oz · BudgetOn Amazon
A synthetic rectangular-ish sleeping bag lofted on a pad inside a tent
SleepREI Co-op Siesta 25Wet climates where down is a gamble25°F · About 3 lb · Budget mid
A stretch-baffle down mummy bag lofted on a pad inside a tent
SleepMontbell Down Hugger 800 #3Slim sleepers who want a stretch mummy#3, around 30°F · About 1 lb 8 oz · Upper mid
A roomy down sleeping bag lofted on a pad inside a tent
SleepSea to Summit Trek TkIIPeople who want a roomier down bagWider mummy · About 2 lb 4 oz · Mid
A budget down quilt lofted on a pad inside a tent
SleepOutdoor Vitals Summit Loft 20Budget-minded quilt usersQuilt · About 1 lb 6 oz · Mid

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