Ultimate back comfort cushion adds plush comfort and back support to any seat. Perfect for hard or thinly padded chairs, the seat cushion stays upright so you can sit back and relax anywhere. As its lumbar cushion and side supports encourage good posture, its pillowed back cradles you in cozy comfort. Easy-to-tote ultimate cushion is ideal for use on a bed, wheelchair, couch, or any chair in your home or on the go. 19 1/2"L x 26"W x 2"H. Machine wash.