The Jobri BetterRest Deluxe Memory Pillow is made of heat sensitive viscoelastic foam for maximum comfort. Luxuriate on the super soft, white spun combed cotton cover while anatomically shaped squishy foam relieves neck, shoulder and back pain. For use while lying down, position the pillow under your neck for instant relief. Helps promote proper spine alignment. Measures: 12 x 18 x 4. 2-year manufacturer's warranty.