The Cocoon Travelsheet CoolMax is a lightweight and quick-drying sleeping bag liner made of CoolMax® fabric. This fabric ensures that it wicks away moisture and keeps you dry and comfortable. It has no side opening or zipper, which makes it ideal as a sleeping bag liner or for warm climates. To be used for backpackers or travelers who value hygiene and compactness. It is durable, washable and environmentally friendly, made from recycled material. A must-have for those who want to travel light and always want a clean, comfortable sleeping environment.