Offering a unique approach to combat heat, the Gel Dough® + Z™ Gel pillow integrates two technologies to ensure a cool night of rest. On top of the pillow, a liquid Z™ Gel layer captures and dissipates body heat. The body consists of unique Gel Dough® memory foam that creates a cooler, softer material and offers an optimal thermal experience. Accompanying the pillow is a Tencel™ removable cover with superior moisture-management properties that aids in optimal sleeping temperatures.