Sleeping Bag Cover Waterproof Bivy Sack 350g Lightweight Mummy Compact Camping Nylon Ripstop Sleeping bag cover - NOT a sleeping bag Size - about 80 x 210cm(about 31 x 82.5") Weight - about 350g Material - Nylon 500D 290T Ripstop Hipora coated inside - stop humidity and chilliness from the ground