Gear Review: Sierra Designs' Cloud 20ºF Sleeping Bag - The Trek

Sierra Designs Cloud 20-Degree Description Sierra Design’s Cloud is a lightweight zipperless mummy style sleeping bag. It features a unique design, with an “oversized integrated comforter” which is a fancy way of saying that there is a large flap of fabric that the user can leave open or tuck into the bag to keep in the heat. It also has a “self-sealing footbox,” which allows the user to pop their feet out on warmer nights or keep his or her feet in without feeling a draft.

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Cloud 20°