The stretch-knit fabric of the Breeze Liner from Sea to Summit offers incredible freedom of movement. In humid conditions, the blend of 70% Coolmax Ecomade and 30% biobased Tencel Lyocell fibres wick moisture effectively to prevent you feeling clammy. Outdoor users will usually opt for this Mummy version, which stretches to fit any sleeping bag shape and has a drawcord base. Rest assured you will hav a hygienic sleep environment wherever you rest your head.Features:- Coolmax fabric technology keeps you dry and comfortable by wicking moisture from the skin- TENCEL Lyocell is a USDA-certified fiber, manufactured using an envrionmentally responsible process and the blended fabric offers luxurious next-to-skin comfort- Rectangular shape with standard-size pillow sleeve is perfect for hostels and budget hotels- Mummy version has a drawcord footbox for optimal comfort. The drawcord and shoulder openings integrate perfectly with the Free-Flow Zip system in s