The rain cover keeps the contents of your backpack dry in the rain. Some prefer to protect their gear with internal pouches inside the backpack, but this causes the outer fabrics of the backpack to absorb water. Many people find the rain cover to be a more convenient option, and in the long run, the polyurethane laminate on water-repellent backpack fabrics lasts longer if the fabric hasn't been soaking wet frequently. - Waterproof 70 denier Nylon - Sealed seams - Suits 20 to 35 liter packs - Measurements 60 x 30 x 26 cm - Drawstring adjustment - Weight 85 grams