The special design of this crescent pillow gently supports the head to relieve stress on the neck. Filled with all natural, non-allergenic buckwheat hulls. Buckwheat is an environmentally friendly grain that requires no herbicides or pesticides. Molds to the contour of the body for customized support. Allows air to circulate to keep you cool and comfortable. Features a super-soft polyester fleece cover. One size fits all.