How to maintain the ski goggles

Ski goggles are delicate equipment, if you want to use several years must be good use and maintenance. Try not to touch the mirror with your hands, but also pay attention not to let sharp objects scratch the mirror (pay attention not to put together with the phone, keys, etc., so as not to scratch the mirror), always keep the mirror clean without stains. Observe the glasses before and after each use. If there is any dust, brush it with silk or glasses cloth.