The silk sleeping bag liner is an ultra-lightweight and breathable liner which can be used alone or in conjunction with a sleeping bag, for added warmth. It will keep you warm in the cold or cool in the heat, helping your body to regulate temperature effectively. Silk naturally helps regulate body temperature and wicks away perspiration. Ultra-lightweight breathable material Use alone or in conjunction with a sleeping bag 100% silk Regulates body temperature Wicks away perspiration and dries quickly Comes in a tough ripstop carry case The liner comes in a tough ripstop carry case and is Mummy shaped. Dimensions packed: 130 x 85 x 50mm Dimensions unpacked: 185 x 85-56cm Weight: 108g