ihealthcomfort Cooling Gel Memory Foam for Large Orthopedic Tailbone Lower Back Coccyx Seat Cushion (Help Sciatica, Prostate, Hemorrhoid Relief Gel Memory Foam reduces pressure on coccyx, tailbone and hip bones while sitting or driving Superior orthopedic comfort on office chairs, stadium seats, air planes, trains, cars, trucks, public buses, couches, or anything else you may sit on! Promotes healthy weight distribution, posture and spine alignment Assists in relief and treatment of lower back pain, numbness, sciatica and pressure sores Relieves stress put on the tailbone and hip bones while sitting on hard surfaces.