Airstream Compression Sac Large - Durable/Waterproof

Durable, waterproof compression sac that lets air out and keeps contents dry. Fits up to: 7 l (sm), 10 l (md), 15 l (lg), 20 l (xl). Size: 6.7'' x 11.8'' (sm), 7.5'' x 13.8'' (md), 8.7'' x 15.7'' (lg), 9.4'' x 17.7'' (xl). Wt: 4.9 oz. (md). D-ring hang loops. Event?? Fabric base allows air to be expelled so drysac can be compressed. Roll top closure with side release buckle.