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  • Merino wool wicks away moisture and breathes to regulate temperature for outstanding comfort in a variety of conditions
  • Air can circulate in the natural hollow spaces of the wool fiber and moisture is wicked away to keep you cool and dry
  • Merino wool naturally resists odors
  • The Cocoon Merino Wool Mummy Liner will add about 12°F (7°C) of warmth to your sleeping bag


View all Cocoon Sleeping Bag Liners

REI membership


Best Use Backpacking, Camping
Sleeping Bag Shape Mummy
Added Warmth (F) Up to 10 degrees
Added Warmth (C) Up to 7 degrees
Stuff Sack Size 3.5 x 7 inches
Material(s) Merino wool
Dimensions 86 x 32 (shoulder) x 24 ( foot) inches
Weight 17.5 ounces
Weight - Metric 0.5 kilograms
Gender Unisex
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Is there a zipper? If there is, how long is it?

Asked by: buckethead
The Merino Wool Mummy Liner is zipperless. It is sewn up to the opening on both sides.
Answered by: REIservice
Date published: 2017-02-25

What are the laundering instructions?  Can moths harm it?

Asked by: mister safety
Moths can eat through wool, they love it. Wash it on cold gentle cycle and air dry it. Woolite or no detergent. 
Answered by: Jamestown89
Date published: 2017-04-09

Is this product 100% Merino Wool?

Asked by: aCSguy
Yes, the Merino Wool Mummy Liner is made from 100% Merino wool.
Answered by: REIservice
Date published: 2017-02-25

Is this a constricting liner ? 

Asked by: Onthefly
This liner is fairly spacious. Most people do not find it constricting, however, that may be a matter of personal preference as some people do not like mummy bags.
Answered by: REIservice
Date published: 2017-02-25

Looking at the pictures it looks like it come with a full hood which sinches down on head and face? Does it have a true hood at the top and can cinch down around your face?

Asked by: Tagish
Yes, you do have the ability to cinch the hood around your head and face.
Answered by: REIservice
Date published: 2017-04-09
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