Slanted seat cushion black cover fits snugly on your car seat to boost your eyes above the steering wheel. This car seat cushion cover is good for shorter passengers and to improve older cars where seats have "settled in." Dense foam gives back support. 16" x 13" deep, from 1" to 3" thick. Black extra cover is 96 percent polyester and 4 percent acrylic. Cover is elasticized, machine washable.