Ideal for any size sheet corner and even works with water beds, this 4-piece Sheet Grippers Set is made of a strong elastic band with durable rubber grips with plastic closures to keep your sheets smoothly in place. 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". Comes packaged in a blister pack.