Continuous Heating Tired of your regular microwave eye compresses not getting hot after a few minutes? Our face shields provide continuous heating on demand. Comfortable and breathable heated eye masks are made of cotton and filled with natural flaxseed for a perfect fit around the eye area. Flaxseed is used as a non-toxic filler in our eye masks. Flaxseed helps improve the effect of the heat and keeps the mask moisturized. Graphene Heating Technology Graphene heating element heats up quickly, promotes eye blood circulation, touches eyelids to generate heat, directly dredges glands, deeply relieves eye dryness, intraocular pressure edema, blepharitis, dark circles, and relieves eye discomfort. fatigue, improved sleep Easy to Power It can be easily powered by PC USB port, power bank, phone charger and comes with a cute box. Take it with you wherever you go.