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In hazy weather, people with a pair of glasses rarely wear a mask, because if you wear both of them, a pair of glasses and a mask, your glasses will become steaming when you breathe out. Recently, the emergence of hazy weather frequently makes me pay a lot of attention to the design of mask, which can prevent the glasses from fogging up. In addition, the anti-fog-mask is made of the silicone-gel material and cotton, which could cling to the skin to the large extent to prevent the heat out. The last but not the least, the interior of the mask has an interlayer, providing convenience for users to replace the mask filter with a new one