BeWell™ Flaxseed Heat Therapy 3D Eye Mask is filled with natural flaxseed for superior heating and is covered in ultra soft plush has a sponge innerlayer that provides comfort while sleeping and relaxing. Simply microwave for moist heat therapy. Easily conforms to your face, has an adjustable elastic strap and hook-and-loop closure, and suitable for most sizes. Comes with a clear zippered pouch for storage. FDA and CPSIA compliant. Use instructions printed on item.