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. The secure hypalon roll-top closure features a D-ring for easy attachment. The Sea to Summit Lightweight Dry Sacks 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. Dry bag is available in seven sizes: 1 liter, 2 liter, 4 liter, 8 liter, 13 liter, 20 liter, and 35 liter, to carry everything from small essentials to group gear. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.