Compress your lofty items to a rock hard state without bulging. * Bloc shape stacks and nests together. * Designed for years of use and abuse. Accept no substitutes! * 9L: 3.2oz 5.25 x 7.25 x 15"; 11L: 3.5oz 5.5 x 8 x 17"; 16L: 4oz 6 x 8.5 x 19"; 22L: 4.6oz 6.75 x 10 x 21"; 31L: 5.3oz 7.75 x 11 x 22"