Sea to Summit Ultra-Sil Dry Sack-Green-20L has the following specifications Sea to Summit Ultra Sil Dry Sack Green (20 Litre)Sea to Summit Ultra-Sil Dry Sacks are more than 50% lighter than our super popular Lightweight Dry Sacks. They're made of Siliconized Cordura , which is one of the lightest and toughest waterproof nylon fabrics available. Now you don't have to choose between keeping your gear dry and keeping it light.Features:A Backpacker magazine Editors' Choice Award Winner!Super compact and ultra lightweightMade of Ultra-SilTM nylon, a polyurethane coated siliconized Cordura for ultimate waterproofing and maximum durabilityNon-wicking Hypalon roll top closure with stiffener at the top for a better sealSoft and flexible with a slippery finish for easy packingTranslucent fabric allows good visibility of the contentsAll seams are double stitched and tape sealedColours: Orange, Berry, Pacific Blue, KiwiSpecifications:Size Variation : 20LWidth : 10 in (base diameter)/He...