1 SIDE GEL LAYER FOR EXTRA COOLNESS Cool gel with performance-knit cover on one side disperses your body heat and have you a longer cooler and more comfortable sleep, ideal for summer nights. The grid design of our gel which is a little less than 1" allows for maximum air flow through the air channels. By drawing heat from you and channeling it away, our gel memory foam pillow will be cool to the touch and will provide you with sound , comfortable sleep all night.