The Aireloom® Visco Pillow takes advantage of a high-density viscoelastic memory foam as well as an advanced fabric exterior to create an unforgettably cool and relaxing sleeping experience. The Visco Pillow's ventilated core recovers quickly and never traps in heat, and the reactive viscoelastic memory foam fill has an open cell structure which retains its shape while providing soft, luxurious support. The Tencel® New Age fabric exterior is ultra-conforming, smooth to the touch, and it efficiently dissipates heat to keep your head cool and comfortable all night long.