Add comfort to your mummy bag with this breathable, moisture-wicking COOLMAX® liner.

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This high-tech, rectangular sleep sack or sleeping bag liner is made of COOLMAX® polyester for fast-drying, breathable and easy-care comfort.

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Keep snug and cozy on cold nights in this comfortable down sleeping bag from our Dream Series. Perfect for camping and relaxed outdoor adventures, its optimally insulating mummy silhouette features a zipper baffle and draft collar to effectively seal in heat. Warmer than expected? A quick unzip and it moonlights as a cozy blanket. With 100% recycled fill and fabrics, PFC-free water-repellant coating, and innovative cutting pattern to significantly reduce waste, this eco-conscious bag helps you get a good night’s sleep, while respecting the landscapes you love.

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Maintain the cleanliness of your sleeping bag with help from the Trekmates Cotton sleeping bag liner. This lightweight liner is made in a breathable cotton fabric.

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Slide the Mountainsmith Cotton Sleeping Bag liner into your mummy bag to increase warmth a few degrees without adding a ton of bulk or weight to your pack.

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An excellent choice for hostels and cabins, the Cocoon Egyptian Cotton MummyLiner helps keep your sleeping bag clean and extends its life span.

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The Cocoon Merino Wool Mummy Liner is made with very fine, non-scratchy wool for excellent comfort when you're traveling and camping out. You can slip it inside your sleeping bag or use it alone.

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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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Keep your sleeping bag clean and extend its life span with the help of this Cocoon Organic Cotton MummyLiner. It's lightweight but still adds extra warmth to your camping kit.

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Use this lightweight liner on its own or inside your sleeping bag, depending on the season. The Trekmates Polycotton mummy bag liner is made in a durable, comfortable polyester/cotton fabric blend.

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This Sea To Summit Premium Blend Silk/Cotton Liner is a hostel-approved liner that's ideal for virtually any kind of travel, with or without your sleeping bag.

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Experience luxurious comfort wherever you roam. Built to extend the life of your sleeping bag or upgrade your travel sleeping situation, this Sea to Summit Premium Silk travel liner is an easy pick.

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Extend the life of your favorite sleeping bag or upgrade your travel sleeping situation with the help of this Sea to Summit Premium Silk travel liner, made from grade AA silk for luxurious comfort.

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Extreme activities, extreme innovation: Protect Down Bag -18C. The sleeping bag for maximum comfort in extreme situations. The head and foot areas feature a waterproof membrane. More capacity inside for greater comfort. Central zipper for climate regulation. Special material to minimize noises. Down ensures a light weight and small packing volume. Protect Down Bag -18C, to sleep as comfortably as in your own bed despite extreme cold.

sleeping-bag-liners