This is the memory foam pillow with an ergonomic arch design that protects the arm while asleep, preventing numbness in the hand and relieving shoulder pain. The central cavity converts into a cervical pillow to maintain the natural curve of the neck and spine; pressure points are relieved to support relaxation and encourage deeper sleep. Your partner’s arm may also rest inside for their comfort when sleeping side-by-side while your head and neck are properly supported. High-density, slow rebound memory foam retains its shape even after multiple uses. Convenient for watching television or reading together. Pillowcase machine wash; pillow spot clean. White. 13 3/4" L x 11 3/4" W x 5" D. (1 1/4 lbs.)