Product: Get this Pressure Relief Memory Foam Comfort Cushion today! Design: The cushion is covered in a stylish, black cushion cover can also be easily wiped clean when required. Perfect: For providing extra support and comfort for wheelchair users. Foam Filling: Filled with deluxe viscoelastic memory foam. SIzes: Available in 18 x 16 x 3inches or 18 x 16 x 4inches. Pressure Relief Memory Foam Comfort Cushion | Black | Living Social