Coccyx Cushion 18 W x 16 D x 3 H Jobst Relief 20 30 Thigh Hi Large Back Size 14 x 27 stretchable sides so you Large Back Size 14 x 27 * Designed for Arthritis sufferers * New Four Stage Therapy Switch provides optimum 20 minute treatments * Simple one touch control features auto shut off timer * Produces intense moist heat without adding water * Fast acting therapy relieves pain and stiffness for hours * HCPC: E0210 * 3 yr warranty Detect normal and abnormal sounds and rhythms 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 *