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REI Expedition Sleeping Bag

$479.00 - $529.00
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REI Expedition Sleeping Bag Video

Designed for mountaineering, the REI Expedition Sleeping Bag features water-repellent down insulation, a waterproof/breathable shell and a double zipper system for temperature regulation.


  • With a temperature rating of -20°F, this bag is suitable for 4-season use
  • Unique double zipper system allows you to adjust comfort as needed—fully close both zippers to increase warmth, open inner zipper to decrease warmth
  • Water-repellent 700-fill-power duck down offers superior loft and warmth
  • REI double-protection design combines a polymer-coated down fill with waterproof/breathable ripstop nylon all around; shell also has a durable water repellent finish
  • REI in-the-round design puts vertical baffles in side walls to wrap you in warmth and create a better fit than bags that use only horizontal baffles
  • Contoured hood, draft collar and full-length draft tubes all work to keep warmth in
  • Differentiated hood and neck drawcords simplify adjustments; antisnag zippers work smoothly
  • Pass-through pocket has zippers on the outside and the inside to provide easy access to your stashed essentials
  • The REI Expedition Sleeping Bag includes a nylon stuff sack and a large cotton storage bag


Members, earn a $20 bonus card

When you spend $100 or more June 24–July 13. Single‑use bonus card redeemable July 15–25, 2016. Details

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Gear and clothing created with REI co-op members, the experts who work in our stores, and a wilderness spirit born in 1938.

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Best Use Mountaineering
EN lower limit (rating for men) Unavailable
EN comfort (rating for women) Unavailable
Temperature rating (F) -20 degrees Fahrenheit
Temperature rating (C) -29 degrees Celsius
4 lbs. 2 oz.
3 lbs. 13 oz.
3 lbs. 11 oz.
Shell Ripstop nylon
Zipper location Left
Insulation type Down
Water-resistant down Yes
Fill 700-fill duck down
Fill weight
42.3 ounces
39.7 ounces
37.6 ounces
Lining Nylon taffeta
Sleeping bag shape Mummy
Fits up to (in.)
78 inches
72 inches
66 inches
Shoulder girth (in.)
61 inches
61 inches
59 inches
Hip girth (in.)
57 inches
57 inches
55 inches
Stuff sack size 9 x 20 inches
Stuff sack volume 20 liters
Compressed volume
14.6 liters
13.6 liters
13 liters
Gender Unisex

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We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

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At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

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Anyone can shop at REI, but for a one-time $20 fee you can become an REI member and enjoy a lifetime of benefits. These include an annual member refund, typically 10% back on eligible purchases.*




*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips,, and discounted items. Learn more