Bertoni Prescription Sports Sunglasses with Optical Clip & 100% UV Protection Windproof Antifog Lens AF100. Mat Black frame made in anticrash Nylon Mesh - Removable Optical Clip for prescription lenses included, easy and fast to remove for cleaning operations - any strength friendly - Your optician can easily assemble your prescription lenses to the clip - Size: suitable for all types of faces (narrow to large) Lens Width 65mm (wraparound sport windproof lens) - Lens Height 40mm - Helmet's Friendly. Wraparound design: protects the eyes from wind and bad weather, provide enhanced peripheral vision. Antifog shatterproof anticrash lenses with 2,2mm of thickness, 100% UV protection. Grip at the nosebridge and tips: keeps the sunglasses from slipping - This sport eyewear allows you to wear a windproof sunglasses without giving up your presciption lenses. The optical clip is flat so your optician can easily assemble in your optical lenses for a few money. Exceeds Drop Ball Test, ECE, EN166 and ANSI Z87.1 certificated.