Comfortable certainly The flexible silicone frame and upgraded high nose pads provide ultimate comfort without hurting your nose or leaving marks on your face. Fog Not The inner surface of the lens is coated with the latest eco-friendly processing technology to prevent the glasses from fogging up without hurting your face. Leaks Not The glasses are made of high quality silicone and ergonomically designed to fit different face shapes and will never leak. Absolutely stylish look The outer surface of the lens is coated with a colored coating which allows the lens to reflect glare sunlight and protect your eyes from the heat of the suns rays. With on-trend colors, we firmly believe these glasses are high fashion and sure to make you stand out. High performance Polycarbonate lenses stay strong even in the toughest conditions. The well-designed buckle makes it easy to put on and take off the glasses without pulling your hair. Note: Customers allergic to silicone should not purchase this product.