Trustworthy and professional-100% pressure test, no damage, no leakage. The cooling mask is made of latex-free PVC and super soft fabric, which can provide dual-temperature use and extend the time of cold and heat therapy. The fabric surface allows for comfortable direct skin use, and elastic bands can hold the mask in place. Hyperthermia or Cold Therapy-Heat easily in the microwave for 10 seconds for heat therapy, or refrigerate in the refrigerator for 2 hours for cold therapy. The gel perals remain flexible even after being frozen, and stick to the eyes or forehead. Effective relief-The reusable ice eye mask is ideal for relieving eye swelling and puffiness, dry eyes, headaches, migraines, sinus pain and pressure. A must-have first aid kit for facial allergy or eye treatment at home, office or travel. Easy to use-The fabric surface allows for comfortable direct skin use and provides an appropriate temperature. If needed, the PVC surface can bring a cooler touch to your eye area. Instructions for use: Cold therapy ~ Freeze for at least 2 hours. Hyperthermia-Microwave heating for 10 seconds. Used to clear away heat and relieve: eye puffiness, dry eyes, tension, dark circles, fatigue, stress and other eye problems. Used for colds to help relieve: sinus pressure, headaches, migraines, allergies, wrinkles.