The Sinus Mask is a convenient, comfortable way to apply hot or cold therapy. Composed of a soft, flexible gel, which is covered with specially selected fabric to give controlled heat transfer and maximum soothing comfort. Because the mask is microwavable, you have an almost instant reusable hot pack. Cooling the mask in the freezer creates a cold pack for a comfortable, soothing cold therapy. This specially formulated gel will not leak and remains usable even if punctured. The unique combination of specially selected fabric and the tough flexible gel provides a nearly indestructible product, which is suitable for use in environments from home to hospital. Perfect for relief of pain and swelling of superficial soft tissue in the eye, nose and sinus area.