Baseline® Plastic Finger Goniometer, 1 Each 20 30 Thigh High 5 inches * Seat Width Urinals 5 inches * Seat Width 24 inches * Overall Height 35 inches * Overall Width 33 inches * Overall Depth 24 inches * Width 30 Those who suffer from tailbone pain find the coccyx cushion the most comfortable due to the cut out at the back of the cushion * This cut out design significantly reduces pressure on the tailbone * Ergonomically designed to provide support while reducing direct pressure on the tailbone * Made with premium quality self molding memory foam that reacts fast to provide instant relief and comfort and provides slow memory foam recovery for longer support * The removable soft polyester and rayon cover zips off easily for machine washing while the transport strap provides convenience for travel * Hypo allergenic * Goniometer is opaque black plastic with easy to read white markings Linear scale on arm measures in inches and centimeters and has 10 centimeter 4 inch scale