Vive Tailbone Cushion Foam Seat for Coccyx, Tailbone, Office Chair, Back Pain & Sciatica Pillow for Car, Desk, Truck & Auto - Comfortable Pad for Pressure Relief Guarantee PAIN RELIEF: Enjoy sitting longer with less pressure on coccyx, tailbone, hip bones, spine & sacroiliac joint ERGONOMIC CONTOURS: Designed with natural curves that form to your body. 100% memory foam build provides the perfect balance of support and cushion. Corrects posture and will not flatten over time PORTABLE & VERSATILE: Perfect for any seat, automobile, office chair, stadium bleacher, airplane, indoors, outdoors and more MACHINE WASHABLE: Breathable velour cover is easily removed with zipper for simple cleaning LIFETIME GUARANTEE: We stand by our products with excellent customer service and a lifetime guarantee