Perfect Posture Pillows Best Memory Foam Coccyx Seat Cushion with Cooling Gel for Office Chairs, Car & Home - Orthopedic Seat Cushion Helps Relieve Tail Bone Pain, Sciatica, Back & Neck Pain by Red PAIN RELIEF - Ergonomically designed seat cushion reduces pressure on lower back, coccyx, tailbone and hips when sitting, COMFORT - body contoured memory foam improves sitting posture, and makes sitting more comfortable, COOLING GEL - designed to increase comfort by helping to keep your lower body cool when sitting for longer periods of time, for example at work, or for long journeys in the car BETTER POSTURE - automatically aligns spine and improves posture, LIFETIME WARRANTY - because we trust our products, and we want you to know that you can trust them beyond the normal 60 to 90 day warranty period