With 4 strategically placed HeatDelete™ Bands and a cool-touch outer layer, the Foam Pillow with Snow Technology™ continuously pulls heat away from your head and neck throughout the night.Designed to prevent overheating, the foam features hundreds of perforations that keep air circulating for your deepest, coolest sleep.3 layers of supportive foam are designed for proper alignment throughout the night. Your neck will thank you in the morning.