100% Memory Foam. Neck Pain Relief by firmly supporting your Neck, Head and Shoulder, Relax your muscles, keep your comfortable driving posture. Comfortable for Passengers to nap on a road trip. The height of the pillow is adjustable by an elastic strap according to your height. Ergonomic shape contoured to your neck fits most car seat. Risk-Free Purchase -30 days hassle free return policy, 12 months product after-sales support! Let your shopping more assured!