Easy to Power - The heating eye mask is easily powered by PC USB port, compatible with a regular 5V/1-2A USB outlet, phone charger, wall chargers, laptops, portable power banks, and even car chargers for anytime, anywhere using. Ideal Gift for Any Occasion - Pefect gift to show your care and love for family and friends. Effectly improve eye health especially for those facing the challenges of overtime work, late-night activities, long trips, or intense study sessions. 99.9% Light Blocking Sleep Mask - The triangle wing pad and 3D Contoured Eye shape design could block out all unwanted light, reduces pressure on the face and nose for a better sleeping environment, thus promotes deep sleep. Suit for daily use, travel sleeping, work place nap while not in heating. Adjustable, Comfortable & Washable - The eye mask is made of Soft, Skin-friendly Fabric and Low Rebound Memory Foam, make you feel comfortable and breathable in sleeping time; The surface of the warm compress eye mask allow to wash with wet cloth, to stay from dirt. Easy Setting Temperature & Timer - The eye masks designed with 3-level heat :38?-42?-45? / (100°F-107°F- 113°F) and a 3-level timer: 15 - 30 - 45 min. You could choose the ideal temperature and heating time to your convenience, the heated sleep mask will automatic shut-off, NO microwave required. Fast and Even Heating - Designed with advanced heating piece material, our eye warm compress mask heats up quickly and provides uniform heat, helping the circulation of blood around the eyes, relieving some eye problems, such as blepharitis, puffy eyes, dry eyes, dark circles, etc.