Combining the cooling benefits of Gel Dough® with the comfort and breathability of Zones Technology™, the Zoned Gel Dough® pillow offers optimal comfort for restful sleep. The Gel Dough® formula creates a cooler, softer memory foam that maintains form for better support than traditional memory foam. Zoned Technology™ cradles the head while supporting the neck, providing exceptional airflow, making this one of the coolest, most breathable pillows available. Accompanying the Zoned Gel Dough Pillow is a luxuriously soft rayon from bamboo velour cover, excellent for sensitive skin and temperature regulation.