Memory foam mattresses are a hot trend for good reason. But for some, they simply get a bit too toasty for comfort. Rest easy. The Gruve 14-inch king memory foam mattress has you covered with the cradling feel you love and the temperature regulation you crave. And how’s this for cool: Thanks to dual ventilation technology, you get a more breathable memory foam mattress. It's topped with a micro cool technology cover to keep you that much more comfortable. Foundation/box spring available; sold separately.