ObboMed&reg; SU-2370 Orthopedic Multiuse Wedge Cushion with Coccyx Cut-Out, Pressure Relief for Hemorrhoids, Tailbone, Sciatica, Hip, Poly/Cotton Cover, Blue 1 x Wedge Cushion 1 x Color Insert Orthopedic wedge designed for spinal alignment and comfort. Coccyx cut-out relieves pressure on tailbone, pelvic, coccyx from long sitting or driving. Help hemorrhoids, sciatica, and hip fracture sufferers alleviate pain greatly. Height difference (1.2-3.1 inches / 3-8 cm) has multiple functions such as being a support wedge or slide-against seat cushion. High density fire-retardant polyurethane foam ensures maximum safety. Come with a removable, machine washable 100% hand-wearing polycotton cover. Elastic straps can be affixed securely to most home/ office/ car seat chair. Dimensions: 13.8 x 17.7 x 1.2-3.1 inches / 35 x 45 x 3-8 cm Color: Blue Material: Poly Cotton cover, polyurethane foam Latex: No ObboMed SU-2330 Wedge Cushion with Coccyx Cut-Out, Cotton Cover ObboMed SU-2340 Wedge Cushion with Coccyx Cut-Out, Fleece Cover ObboMed SU-2350 Wedge Cushion with Coccyx Cut-Out, Velour Cover ObboMed SU-2370 Wedge Cushion with Coccyx Cut-Out, Poly / Cotton Cover