Cocoon MummyLiner - Microfiber

Priced: $19.96 - $24.95 Rated:   - 3 stars out of 5 by 2 reviews.
Cocoon MummyLiner - Microfiber
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Color: Twilight Blue
Available Colors: $19.96
19% off
Regularly: $24.95
Campmor $21.99
11% off
Regularly: $24.95
REI $24.95
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Cocoon MummyLiner - Microfiber -

The MummyLiner - Microfiber from Cocoon is a lightweight, fast drying breathable liner with a good, soft grip. It adds warmth and comfort to your sleeping bag, while protecting it from dirt and body oils. A MummyLiner will extend the life of your bag by eliminating the need for frequent washings, which is how most bags are damaged. Its high-quality cotton is breathable, creates a natural vapor balance and is very comfortable against your skin.
Cocoon MummyLiners are specially designed to fit any tapered mummy sleeping bag. They feature a drawstring hood, a boxed foot-end and are double stiched for durability. On a hot night, your MummyLiner might be all you need.


  • Completely double stitched.
  • 100% polyester microfiber is lightweight, breathable and feels soft next to skin

Wash and Care:

  • Machine wash the Cocoon Microfiber Mummy liner in cold water; tumble dry low


  • Drawstring hood.


  • Adds insulation and comfort


  • A MummyLiner™ is an extremely lightweight tapered sleeping bag liner
  • Boxed foot end
  • Wide top opening.
  • Liner protects and keeps your sleeping bag clean and can add up to 5°F to the temperature rating of your sleeping bag
  • Weight 8.1 oz.
  • Use as a sleeping bag liner for mummy-shaped bags, or as a stand-alone sleeping bag in warm climates.
Ensconce yourself in the buttery softness of the Cocoon 100% Microfiber MummyLiner™. Not only is it lightweight and fast drying but it also adds up to 5.5°F in warmth to your mummy sleeping bag's temperature rating. Extends the life of your sleeping bag.


Add a little extra warmth and softness to your sleeping bag with the Cocoon® Microfiber Mummy liner. Lightweight and efficient insulation adds comfort with minimal added weight.


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Average Price History: Price History
Review RatingNumber of Reviews
Added warmth (C):Up to 3 degrees
Added warmth (F):Up to 5 degrees
Dimensions:86 x 32(shoulder) x 24(at foot) inches
Material:100% Polyester
Sleeping bag shape:Mummy
Stuff sack size:3.5 x 7 inches
Weight:8.1 oz / 230 g
Weight - metric:0.23 kilograms
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Cocoon MummyLiner - Microfiber Reviews:


buy it for comfort, not warmth

I bought this liner primarily to add comfort and warmth to my Big Agnes Cross Mountain 45 deg bag. Although rated as 45 degrees, the bag alone is good to a minimum of 50 degrees on a good night. I needed something to make the slick polyester internal lining feel more comfortable, and add a little warmth. I have used this liner probably 5 times with the bag so far, and just this weekend stretched that same bag to 40 degrees wearing Cap 2 baselayer and this liner. I attribute about half of this temp change to the actual warmth factor of the liner, and the other 5 degrees to not touching the cold feeling polyester lining of the bag. Liner is also very long, and I was able to wrap it completely around my head while still having length at my feet. Material is nothing special, and is quite thin. If you need more than 5 degrees warmth, I would say to look at something else. However, if you just need a liner to add comfort, cleanliness, and is an economical choice... this is it.
Travis the Chemengr at REI on 11/11/2013

Mummy liner

Lightweight and small, but the only way in was through the top, making it awkward and difficult to get in or out. I may rip out one seam part way and add a zipper or some ties. Also no ways to tie it into the sleeping bag.
WeiXinhua at Campmor on 08/08/2013