Description of Outdoor Research Dry Ditty Bags Hit the soggy trail and paddle around lush islands; these lightweight bags with a waterproof roll-top closure will keep essentials organized and dry for the long haul. Features: Set of 3 ditty bags: 1 small, 1 medium, 1 large Durable Barrier™ fabric; 70D nylon with waterproof coating Waterproof taped seams Two-dimensional flat construction Roll-top waterproof closure Durable buckle secures roll top Dry Bags are not intended to be submerged for extended periods of time. Roll-top closure must be closed correctly (rolled 3 times and buckled) to keep contents dry. Pack electronic equipment with extra care (double bagged or in special waterproof hard cases) to prevent water damage as some moisture can enter the bag. Contact with abrasive or sharp objects can compromise integrity and waterproofness of dry bags. Small: 7 1/8" x 5 1/2" (14 x 18cm) Medium: 8" x 8" (20 x 20cm) Large: 9 1/4" x 9 1/4" (23 x 23cm)