The Sea to Summit Ultra-Sil Dry Bag is an ideal dry bag for backpacking and travel. Made with lightweight, waterproof bluesign approved 30D Ultra-Sil fabric featuring Cordura yarns, it's the perfect choice to organise your gear inside your backpack or duffle like a pro. The semi-translucent fabric makes its easy to see whats in each dry bag. Other features include a non-wicking hypalon roll-top closure, an oval base to prevent the dry bag from rolling away on sloped surfaces and taped seams to keep moisture out. An excellent choice for lightweight backpacking, cycle touring and travel. Robust and extremely light Ultra-Sil 30D Cordura nylon fabric Slippery finish for easy packing and unpacking PFC-free DWR finish Technical features Hydrostatic head: 2000+ mm Repair buckle size: 5/8in / 15mm (2-Pin) Weight 3L: 20 g 5L: 32 g 8L: 39 g 13L: 47 g 20L: 58 g Dimensions 3L: 20.7 x 17.1 x 14 cm 5L: 30.8 x 17.1 x 15 cm 8L: 36.8 x 19.1 x 17.2 cm 13L: 43.3 x 22 x 19.6 cm 20L: 47.3 x 26.9 x 23.6 c