An ergonomic U-shaped design correctly supports the natural curves of your head, neck and shoulders, providing ideal support for flights, cars, or buses. DOUGH memory foam is infused with cooling gel material to create a softer, cooler memory foam. The extremely soft and breathable cover made of rayon from bamboo velour (75% polyester, 25% rayon from bamboo) enhances the cooling effect and is removable for easy laundering.