Outdoor Research Cinch Sack Daypack Durable Barrier fabric; 70D nylon with waterproof coating Webbing shoulder straps double as drawcord closure; pull tabs for easy opening Inner zippered pocket doubles as small item storage and stuff sack Dimentions: 19 1/2" x 11"/50cm x 28cm/ Volume: 671 cu in/11L Avg weight: 3.4oz/96g