Designed for pressure relief, this visco-elastic foam cushion offers firm support and eliminates pressure points and soreness. The coccyx cut-out at the rear of the cushion helps to distribute body weight evenly, relieving unwanted pressure from the base of the spine. Enhances the comfort of virtually any seating surface at home, in the office or in the car. Machine washable, navy-blue, zippered cover included. 18"W x 16"D x 2"H.