TheraPearl eye mask is made of beads to support cold or heat treatment and efficiently relieve pain. TheraPearl technology offers flexibility and malleability, allowing for a perfect fit to the eyes. This compress is non-toxic and reusable, ideal for relieving dry eyes, headaches, sinus problems or puffy eyes. Contains a mask measuring 22.9 cm x 7 cm. Cold therapy: Place in the freezer for at least 2 hours. Heat Therapy: Microwave according to directions on package insert. The application should not exceed 20 minutes.