Seashell Beach Mesh Bags - Set of 4 Great beach bag for collecting shells or holding slippers while walking along the sand. Adjustable over the shoulder strap accommodates both young and old. Bag size is designed to fit a pair of most adult size sandals. Mesh design allows sand to pass through for easy rinsing. Set of 4 Measure 10" x 13" Adjustable Over the Shoulder Carry Strap.