This pillow is uniquely shaped and tailors the support by following the natural curvature of your spine. The innovative shape provides the support you need by designing the pillow in an innovative way. This pillow is made of TEMPUR® Material foam which was first developed by scientists at NASA. It actively forms around your head, neck and shoulders for an unparalleled level of support. With its unique shape, you can sleep on either the thick side or the thin side. Free Next Day Delivery.