ComfortClay® Plush Eye Mask combines clay, glycerin and water for a wonderful therapeutic experience This formula works as both a hot and cold therapy remedy to relieve sinus pressure and soothing eye relief to promote healing and relaxation. Soft plush backing enhances your relaxation with a soothing surface. Adjustable elastic strap with hook-and-loop fastener. FDA and CPSIA compliant. Use Instructions printed on item.