Smart Cool Pad with Pillow Cover Save on your energy bill this year with the Smart Cool Pad! This special technology will keep you cool even on the hottest nights, with no refrigerating or water required. The Smart Cool Pad is a nylon pad with special gel inside that traps cool air and holds it in. The gel pad will stay cool for up to four hours, after which time it will adjust to your body temperature allowing you to have a comfortable night of sleep. Also included is a pillow cover featuring a sleeve made especially for the S Set Includes: 1 Gel Pad 1 Pillow Cover. Size: 12x16" Pillow Cover: 20x26" Material: Nylon Patten: Solid