Combines the convenience of mobility with the benefits of long-term therapy. The crystal fill will never decay or deteriorate, does not smell and prevents the formation of mold, fungus or mildew. An all-natural cotton fleece cover gently conforms to painful joints, while the multi-ply outer fabric incorporates a vapor barrier to direct the maximum amount of moist heat toward the body. Hook & loop closure and wide, elastic strap hold the wrap comfortably in place with gentle compression.