Sheet grippers are ideal for any size sheet corner and even works with water beds. This 4 pack is made of a strong elastic band and has durable rubber grips with plastic closures. Item is packaged on a blister card with hanging hole. Easily extends from 7 1/2 to 11 1/2. Elastic band is 4 1/2 x 3/4 when resting. Grippers are 1 1/4 x 1 1/2.