Explosion - proof for greater safety High - definition lens for clearer vision When going out in winter, clear vision is the basic guarantee for safety. The surface of the lens is coated with an anti - fog layer to prevent fogging, but it cannot guarantee complete fog - free performance. There will still be moisture when exhaling towards the lens. Please purchase with caution if you mind. Anti - fog lens #Clear vision for greater safety This product is in short supply, may be out of stock at any time, don't buy if you mind, all the goods sold in this store are genuine goods, welcome buyers to buy, we are willing to exchange high-quality service for your five-star praise