Filtered intake and exhaust apertures provide ideal air exchange and keep dirt from entering frame Triple layer molded face foam for a secure seal Mirrored smoke Lexan® lens with anti-fog coating and UV protection; additional optically correct clear lens also included Drilled frame increases ventilation and reduces fogging Four bonus interchangeable vent inserts give goggles a custom look Three post tear-off system Molded strap adjustment system Silicone-backed woven strap for a secure fit Plush goggle bag included