Collapsible bottom, folds flat for storage 1/8" (thickness) polyester fabric-faced neoprene material Keeps drinks colder longer and hands dry Built to fit 16 oz tall cans Use or decorate with htv, screen print or sublimation Built to fit 16oz tall cans. 1/8" (thickness) neoprene material. Collapsible bottom, folds flat for storage. Keeps drinks colder longer and hands dry. Helps prevent surface damage by limiting condensation. Use or decorate with htv, screen print or sublimation.