32% ice silk cover provides cooling & breathable surface -Airflow punched gel infused memory foam maintains ideal coolness -Air-circulation punched bamboo charcoal memory foam for freshness -Memory foam layers are great for pressure relief & airflow ventilation -3D CNC cutting foam makes perfect adaption to adjustable beds -With certi PUR-US certification, Oeko-Tex certification & 10-Year warranty -2 Twin XL mattresses make a split king