Tush Cush Orthopedic Cushion Firm, wedge-shaped cushion is ideal for use during floor exercises and for sitting for long periods. Tips pelvis forward to comfortably align spine and reduce stress on lower back. Coccyx area is suspended over U-shaped cutout to decrease pressure on tailbone. Polyurethane foam tapers from 2¾" to 1" high. Latex free.Product photo may not exactly match the product offered for sale.