Polyester Blend Bring added stability and protection to your LUCID Mattress Elevator Base with one of our premium covers Position the thicker side of the elevator at a 90-degree angle flush with your bed and headboard (or wall if you don’t have a headboard) Upon installation, the cover may appear too small if you fail to match the 90-degree angle of the cover to the 90-degree angle of the mattress elevator This product is machine washable to keep your bedroom smelling and looking fresh The King and Queen covers are comprised of two pieces