Elaine Karen Deluxe Adjustable Bed Sheet Grippers - bed Sheet Straps - Sheet Suspenders, Set of 4 Set of 4 Adjustable sheet grippers, A perfect fit with EVERY mattress Secures sheets, mattress pads, and even ironing board covers Never worry about a messy wrinkled bed again Also great for Waterbeds, Futons, RVs, and Hide-a Beds Made of heavy duty elastic