Choose your side to choose your comfort. This pillow gives you the cradling comfort of memory foam on one side and enhanced cooling on the other. It's the optimal balance of comfort and support, to gently align your head and neck for deeper sleep. Whether you choose the same side every night, or switch from cool comfort to cozy comfort, we've got you covered. This Reversible Memory Foam Pillow is made from CertiPUR-US® foam, certified environmentally conscious and tested for durability. It comes with a 5-year limited warranty for better nights and brighter days.