Gel Dough® + Dual Z™ Gel King High Loft The new Gel Dough® + Dual Z™ Gel pillow comes to ensure a cool night of rest. The pillow's unique combination offers maximum cooling by capturing and dissipating heat with two liquid Z™ Gel layers placed on both sides of the pillow. The unique Gel Dough® memory foam enhances the liquid Z™ Gel layers with a softer, cooler memory foam creating multiple touch points to relieve heat. Accompanying the pillow is a luxuriously soft rayon from bamboo velour cover, excellent for sensitive skin and temperature regulation. L : 35 - W : 27.5 - H : 16 - W : 48