By Science Of Sleep Body Wrap Pillow for Joint Pain and Correct Body Posture. Complete body support and comfort! This body wrap pillow surrounds and contours to your body providing you with extraordinary support and comfort. It aligns your spine for correct sleeping posture. This pillow is ideal for those suffering with head, neck, shoulder, back or leg pain. The slickened polyester fiber filling provides comfort and will hold its shape for years. The total comfort and support of this pillow can be enjoyed by everyone including those suffering from joint pain, recovering from surgery and for mothers-to-be. The pillow core is 100% slickened polyester fiber to allow air circulation and body comfort. The pillowcase is 160-thread count poly cotton blend.