Featuring 100% GelFlex Grid for cooling, ergonomic comfort. Release pressure of head and neck The soft hyper elastic material is composed of thousands of pressure releasing grids, which can effectively relieve the pressure on the head and neck without pressing on the blood vessels. Cool & Ventilated Breathable grids and cooling material create a comfortable environment of temperature and humidity, no more sweating. A booster to adjust pillow height With special 3cm booster can adjust the height of the pillow according to sleep habits stretch shoulders and neck. Stable performance, Easy to clean Hyper elastic material performance is stable, anti-aging, durable; Washable with water. Ensure clean and comfortable on your sleeping. Materials: Pillow: 100% Thermoplastic elastomer Pillowcase: 100% Polyester Pillow Booster: Polyurethane Foam Care Pillowcase: Machine wash the cover with like colors in cold water, tumble dry low Pillow: Remove from the cover and wash in warm water with gentle soap, then let air dry Pillow Booster: Hand Wash With Gentle Detergent, Do Not Bleach, Tumble Dry Normal