Anti-winds and keep you warm. Anti-fog and two way venting for clear and clean vision. Comfortable triple-layer foam for face fitting. 100% UV400 Protection. PC lens + TPU frame for impact-resistance. Elastic strap for better helmet compatibility. Please do not use finger or rough cloth to wipe and clean the lens as they will either stain or scratch the lens. Please keep the ski goggle in the pouch or box instead of facing on the ground or desk. Please do not use mascara or other oily substances in case the lens gets dirty. Please air-dry the ski goggles after every snow sport e.g. skiing, snowboarding and etc. Please do not wipe the inner lens which will invalidatie anti-fog function.