The COCOON Thermolite EcoMade Performer Mummy Liner is the thermal sleeping bag liner that actually fits — and actually works. Made from a four-way stretch fabric that moves with your body, it's been tested by our founder Rebecca on real camping trips, in real UK winter conditions. No bunching, no constriction, just warmth and comfort all night long.
Whether you're a plus size camper who's been let down by liners that restrict, twist, or don't add warmth — this one's for you.
Why Campers Love It
🌡️ Adds up to 7°C to your sleeping bag's temperature rating — ideal for winter camping and shoulder-season camping in lighterweight sleeping bags
💧 Wicks moisture fast — dries 20% faster than standard insulating fabrics, 50% faster than cotton
♻️ 100% recycled Thermolite EcoMade — warm even when wet, with hollow-core fibres that trap heat
🧘 Stretchy, soft, and skin-friendly — the four-way stretch fits larger bodies without pulling or restricting
🎒 Packs down small — 14 × 9 cm in its Ripstop Nylon stuff sack, so it earns its place in your pack
Thermolite EcoMade is a 100% recycled insulating fabric that keeps you warm even when damp. Its hollow-core fibres trap air for superior insulation at minimal weight — and it wicks sweat away from your skin so you stay dry and comfortable through the night.
Care
Machine wash at 30°C. Do not bleach. Tumble dry on low. Wash colours separately.
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