Gear in, roll the top 3 or more times, close the buckle. Now your gear is safe from spray! These renewed Light Drypacks have a rectangular basic shape, for better packing efficiency. This series is best for use inside a backpack, pannier or other bag. It is lightweight, and not as tough as those tarpaulin-type, heavy drysacks that are often used in paddling. - Material: 40D ripstop Nylon - Polyurethane coating - D ring for attaching - Hydrostatic head 10 000 mm Note! This bag does not protect gear from water if submerged. For Deuter pack owners: this 5 liter drysack is perfect for Deuter bakcpack's flap pockets, and the 20 liter drysack from this series fits the lower compartment of > 35 liter backpacks.