REI Co-op  Magma Sleeping Bag

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This premium 3-season backpacking bag uses both water-repellent down and waterproof / breathable fabric panels to keep you warm and dry in the backcountry.

Features

  • Polymer-coated down fill and waterproof / breathable fabric at the hood, sides and foot protect against damp tent walls
  • Water-repellent, 700-fill-power duck down offers superior loft and warmth
  • Ripstop nylon shell with a durable water repellent finish sheds light precipitation and protects down fill
  • Performance mummy shape keeps weight low and thermal efficiency high
  • Vertical baffles in side walls provide more warmth and a better fit than bags that use only horizontal baffles
  • Contoured hood, draft collar and full-length draft tube all work to keep warmth in
  • Differentiated hood and neck drawcords simplify adjustments; antisnag zipper works smoothly
  • Nylon stuff sack and a large cotton storage bag included
  • Special buy
  • REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits

Imported.

Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Our backpacking bags are rated for temperature according to an independent testing protocol: International Organization for Standardization (ISO) 23537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. For REI Co-op brand nongendered sleeping bags, we provide an overall temperature rating that falls between the Comfort and Lower Limit ratings.
View all REI Co-op Backpacking Sleeping Bags

Technical Specs

Best Use

Backpacking

Tested Lower Limit

10 degrees (F) - EN

Tested Comfort

22 degrees (F) - EN

Temperature Rating (F)

10 degrees (F)

Temperature Rating (C)

-13 degrees (C)

Weight

2 lbs. 13 oz.

Shell

Ripstop nylon

Zipper Location

Right

Insulation Type

Down

Water-Resistant Down

Yes

Fill

700-fill duck down

Fill Weight

1 lb. 13 oz.

Lining

Mini-ripstop nylon

Sleeping Bag Shape

Mummy

Fits Up To (in.)

72 inches

Shoulder Girth (in.)

60 inches

Hip Girth (in.)

55 inches

Stuff Sack Size

Unavailable inches

Stuff Sack Volume

15 liters

Compressed Volume

9.4 liters

Gender

Unisex

Sustainability

From a Climate Neutral Certified brand

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