The Contour Cloud® Pillow is built with three layers of comfort: The "white" soft memory foam layer shapes to the curves of your head and neck providing soft cloud-like comfort. The "yellow" firm center is designed to provide extra support to the neck and shoulders The "blue" Support base is made with extra firm foam to prevent 'bottoming out' and keeping your head properly supported throughout the night! Includes a soft velour cover. Ordinary pillows don't properly support your head and neck, forcing your neck into unnatural, potentially harmful positions. Sleeping in an unsupported manner can cause the surrounding muscles in your neck and upper back to work harder which can result in a stiff, achy morning! The Contour Cloud® Pillow helps support and align the neck and spine. Your head, neck, shoulders and back "sense" the support and relax so you enjoy a deep, restful night's sleep and awake feeling refreshed and rejuvenated. Your pillow comes with a custom fitted velour cover. It provides a soft sleep surface which compliments the pillow. Additional covers are available .