The fabric of natural mulberry silk has a perfect touch which can intimately cover your eye skin.It is designed with 5-class heat temperature from 37 to 52 °C and 6-class timing from 10 to 60 minutes. It will stop working automatically when the countdown ends.It can be easily powered by PC, power bank, USB adapter and is packed with a lovely carry bag. Free to take it everywhere you go.It is heated with composite metal fibre heater, but more convenient, more economical than disposable hot steam eye mask.The 2 tiny pillow designs on back side of the eye mask can perfectly cover the skin around your eyes and totally block the light.