Bertoni Shooting Glasses with 4 Interchangeable Lenses and Carrying Case – SH898 Italy Tactical Protective Safety Glasses with RX Optical Prescription Carrier: FRAME: Lightweight semi-rimless frame in Anticrash Shatterpoof PC - Color: Matt Black / Shiny Red finishing finishing - The kit includes: 4 interchangeable anti-fog lenses, any lens with its own nosepad assembled – Neoprene carrying case with Bertoni engraved logo, microfiber cleaning soft cloth. Exceeds Drop Ball Test Military Standard, ECE and EN166,  ANSI Z87. Lenses: 2,2 mm in anticrash shatterproof IMPACT RESISTANT polycarbonate - Antifog Coating - Frameless promotes the ventilation - 100% UV Protection. Lenses are decentered in order to avoid any optical distorsion. See the VIDEO TUTORIAL here or match the QR code you'll find inside the pack TO SEE HOW EASY IS TO CHANGE LENSES AND ARMS, NO necessary to disassemble the nosepad from the lens, any lens gets its own. 4 shooting antifog coated lenses included, let you match the light conditions: BROWN: blocks undesirable blue light while improving contrast of the orange target – CLEAR: best used in low light, overcast conditions – VIOLET: best lens for contrast of orange targets against a deep blue sky and green background - RED: good for shooting against green backgrounds by highlighting the orange target and neutralizing greens. ADJUSTABLE ARMS in 4 sizes of length for a truly customizable fit - Size: suitable for all types of faces (narrow to large) - Wraparound design: protects the eyes from wind and bad weather, provide enhanced peripheral vision - Slip-resistant soft rubber-tipped arms and nosepad for a comfortable fit - Vented lenses: prevents and reduces fogging. The kit includes 1 Optical Clip RX Adaptor for Prescription (removable), doesn't need install tools. An optician will easily fit the lenses for you (optical lens' size: 50 mm x 30 mm).