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Regular price $53.99 USD
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Add warmth + fluff

Camping in the freezing woods sound uncomfortable? Let’s change that -- with our Ace Camp Cotton Mummy Sleeping Bag Liner, made to add a layer of support to your sleeping bag while keeping it clean.

Layers of comfort

To keep you at ease
Breathable + comfortable
When you sleep in just a sleeping bag, there isn’t much support. But our liner adds the warmth of 100%-cotton support for home-like comfort.

Fits most sleeping bags

Our liner is a standard fit for most sleeping bags.
Pack + go
You don’t need multiple blankets to add some warmth in your tent -- our foldable and storable liner adds the support you’ll love.
Lay flat
Our body-shaped design ensures body-shaped curves for a more exact liner fit.

An overnight must-have

If the nightfall chill worries you, you’ll appreciate the warm help (up to 10 degrees more, in fact) our liner can bring.

A gift for those adventurers

If you know someone who loves to hit the desert or mountains, give the gift of a warmer night’s sleep with our body-contoured bag liner.
Ace the outdoors game
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Hiking & Camping Cotton Mummy Sleeping Bag Liner




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  • I love this liner!!!

  • Light weight and packable!

  • This is light weight, packs small Soft and comfortable material.

  • I bought this for cold weather camping. It was bitter cold and this worked awesome!

  • Good quality and light weight. Good for traveling

  • Warm, lightweight, and convenient even for non-backpacking applications

  • This thing is amazing, I sleep with it every night it's not as stretchy as it appears tho and the drawstring looks kinda iffy but it hasn't given me any troubles.

  • Very lightweight, warm but breathable. Fantastic for when you don't want the weight of a full sleeping bag but would like something warm for the night.

  • Absolutely loved this lightweight liner. Used it this weekend on a scout wilderness survival camp where the temperature dropped to 26°F overnight. Used in conjunction with my 3-season sleeping bag in the tent and felt so warm and cosy I didn't notice the temperature.

  • I used this product for backpacking/camping. It is heavy and bulky for backpacking but would be perfect for car camping. Is warm and soft!