About this item Polycarbonate frame Polycarbonate lens Anti-Fog Coating coating Comfortable? Of course! RTWAW swim goggles are ergonomic swim goggles that won't cause discomfort over long periods of time, and the flexible silicone frame and improved high nose frame provide extreme comfort without hurting your nose or leaving marks on your face. Fogged up? No! These goggles are coated with the latest eco-friendly treatment technology on the inner surface of the lenses to prevent fogging of the goggles without harming your face. ergonomic design to ensure that they fit different facial shapes and will never leak, making them suitable for both men and womenoggles for men and women Stylish look? Absolutely! The outer surface of the lens is coated with a colorful coating that allows the lens to reflect the dazzling sunlight and protect your eyes from the heat of the sun's rays. With its stylish colors, we are confident that these goggles are high fashion and will make you stand out. High performance! Polycarbonate lenses stay strong even in the toughest conditions. Well-designed grommets make putting on and taking off goggles a breeze without pulling hair. Note: Do not purchase this product if you are allergic to silicone.