It’s not mechanical. It’s material. And personal. The Pro + Cooling Pillow features a unique cell structure within our material is activated by the unique characteristics of your body. Your weight, your shape, your temperature, your sleep position. Even as these elements change throughout the night, our legendary material continues to comfort, support and conform to your body. And unlike ordinary pillows, these pillows won’t lose their shape or flatten over time. This is a difference you can feel allover. Not just tonight, but tomorrow too.