The Graphene Technology Cover is made of nylon and highly absorbent Graphene fiber, making it anti-static, anti-pilling, and durable. It allows sweat to evaporate easily and keeps the skin dry, which is perfect for hot or humid weather, ensuring that moms no longer have to worry about their kids sweating or catching a cold. Sleep Aid & Fatigue Alleviation: Gelsea fusion foam, enriched with cooling gel, bamboo charcoal, and lavender extract, efficiently dissipate heat and regulate body temperature, regulates moisture, absorbs perspiration, and enhances blood circulation, metabolism and relax your body, ultimately aiding in fall asleep and alleviating fatigue. Breathable and Healthy: This Gelsea foam mattress cover is made of 60% polyester and 40% bamboo fiber, making it anti-static, anti-pilling, making it Moisture, Transferring and Breathable, can expel the steamy sweat from the contact surface between you and mattress so to keep body comfortable and dry when sleeping. High-quality Top Sponge: Gelsea twin size mattress is made of high-quality air layer jacquard fabric, multi-layer high-quality sponge keeps you away from back pain. All memory foam is CertiPUR-US certified and tested to be free of harmful substances for a safer, deeper sleep. Worry-Free & Guaranteed: Gelsea Mattress comes with 10-year support by a professional product development and sales team with several branches nationwide. If you have any unsatisfactory issues, please feel free to contact them. Factory Address:874 Paragon Way,Rock Hill,SC 29730.-Phone:901-462-1418