Ecomcrest SC646437061780 Memory Foam Car Seat Cushion with Neck Pillow, Durable Sciatic, Effectively Supports Tailbone, Coccyx, Back, Nerves & Spine, Reduces Pain & Buildup of Pressure on Joints Coccyx cutout for tailbone pressure relief and comfort during prolonged seating Design to makes sitting more comfortable, reduces pressure on sensitive areas, promotes healthy posture and improves spinal alignment Lightweight, durable and portable enough to be conveniently carried in a suitcase or handbag Provide incredible sitting comfort when added to a chair, bench, car seat, plane seat or wheelchair