Here's what other sites are saying:
The lightweight and breathable Cocoon Egyptian Cotton Mummy Liner adds comfort to your sleep and lifespan to your sleeping bag. Cocoon made this liner with soft and easy-to-wash Egyptian cotton to help you sleep clean and comfortable wherever your travels take you. The Egyptian Cotton Liner adds warmth to your mummy bag on cold nights, and breathes well to allow moisture to evaporate quickly, cooling you down in hot and humid places. It also greatly extends the life of your sleeping bag by protecting it from harmful dirt and oils. At just over seven ounces, even the thought of it makes your pack seem lighter.
- Backcountry.com refers to the unisex version
The Egyptian Cotton MummyLiner from Design Salt can protect your sleeping bag investment. Mummy Liners add warmth and comfort to your sleeping bag, while protecting it from dirt and body oils. They will extend the life of your bag by eliminating the need for frequent washings, which is how most bags are damaged. Specially designed to fit any tapered mummy sleeping bag, they feature a drawstring hood, a boxed foot-end and are double stitched for durability. Egyptian Cotton is a very lightweight, fast-drying soft, yet durable fabric. A great compromise between regular cotton and silk sleeping bag liners! On a hot night, your MummyLiner might be all you need.
- Altrec Outdoors refers to the unisex version
Cocoon Mummy Liners are tapered sleeping bag liners to add warmth and comfort to any mummy bag. Easy to wash, MummyLiners extend the life of your bag by protecting it from dirt and body oils. Features drawstring hood, boxed foot end, double stitched, and nylon stuff sack. Size: 95"x35" tapering to 22".100 percent Egyptian Cotton+7.2 F7.4oz.
- Campmor refers to the unisex version