The Sea to Summit Lightweight Dry Sack is a lightweight, do-it-all dry storage and organizing option for backpacking, hiking, camping, sea kayaking, ski touring, cycling and travel. Manufactured from lightweight PU-coated 70D nylon, with a 10,000mm waterhead (the higher the waterhead rating, the more waterproof the fabric), its waterproof seams are tape sealed. Lightweight 20-liter roll-top dry sack is a do-it-all dry storage and organizing option for backpacking, hiking, camping, sea kayaking, ski touring, cycling and travel Manufactured from lightweight PU-coated 70D nylon; 10,000mm waterhead (the higher the waterhead rating, the more waterproof the fabric) Waterproof seams are tape sealed; secure hypalon roll-top closure with D-ring for easy attachment Cylindrical base has ideal height-to-width ratio for easy packing ; patent-pending field repair buckle can be replaced in seconds The inside of the bag has a white interior which reflects light, making it easier to find the item from inside 20-liter dry bag is ideal for carrying extra clothes, or as a critter/bear bag Dimensions: Diameter x Hight:: 25 x 61cm Weight: 86g Volume: 20 litres (with closure rolled three times) The secure hypalon roll-top closure features a D-ring for easy attachment. The Sea to Summit Lightweight Dry Sack's cylindrical shape has an ideal height-to-width ratio for easy packing. A patent-pending field repair buckle can be replaced in seconds with a Phillips screwdriver. What size bags could hold 1 litre: a phone (in a waterproof case - double bagging essential), snacks & wallet 3 litre: some snacks, first aid essentials, gloves or beanie 4 litre: a layer and a meal or so worth of food 8 litre: a pu