This popular cushion promotes proper posture in any chair while providing support and comfort for your lower back. Our side support wings ensure ultimate comfort by helping keep you in the correct position. Use at home, office or in your car. Precision-cut foam. Covered with a durable fabric cover. Deluxe versions come with a positioning belt. 13"x14" (33cm x 36cm)Once removed from original packaging this item is not returnable.