The Breeze Sleeping Bag Liners provide versatility to suit a range of climates and conditions. They are made with a knitted, blended COOLMAX® EcoMade/TENCEL™ Lyocell fabric that provides incredible stretch and freedom of movement, feels soft against your skin and wicks moisture to keep you comfortable while you sleep. The Mummy version stretches to fit any sleeping bag shape and has shoulder and foot drawcords that integrate with Free Flow Zip system Sea to Summit bags. The Rectangular version has a built-in pillow sleeve and is ideal for travellers.