Described as "a spa treatment for your eyes," the Wizard Research USB heated eye mask is ergonomically designed to provide soothing warmth to dry, tired or irritated eyes.Long sessions at the computer, reading books, or windy conditions are common causes of eye fatigue and feelings of eye discomfort. Applying heat to closed eyes is soothing, relaxing and helps promote normal hydration and circulation.The mask utilises graphene infrared heating elements and is crafted from premium, ultra-soft natural cotton. This delivers a consistent, gentle warmth to your eyelids with a luxurious soothing sensation. 10 temperature settings deliver sustained heat between 37°C and 47°C.Increasing by around 1°C between each setting: setting 1 at 37°C setting 2 at 38°C...to... setting 9 at 46°C setting 10 at 47°C Customisable countdown timer with automatic shut off Use it for dry or moist heat Supplied with two washable, cotton covers for comfort and hygiene USB powered for portability and convenience (cord length ~230cm) Embossed case for travel and storage The covers can be hand washed and line dried. DO NOT wash the mask itself, just the covers.