Lightweight TAC Polarized Tinted Classic Vintage Retro 70s 。*Clarity and comfort: The TAC lenses comply with the UV400 standard, avoiding eye fatigue and headaches; the polarisation effect is greater than 99% which can enhance visual sensitivity by reducing the glare reflected from objects, making what is seen clearer and brighter *Upgraded material: Upgraded TAC material, unlike ordinary TAC and PC lenses, they are better in terms of clarity, protection, comfort, and applicability; TR 90 frame, an ultra-lightweight material that is flexible and hard to impact, not easily abrade; the nose rest and the feet of the frame are made of rubber to eliminate slippage *High stability: The frame is elastic and tough, not easy to break and deform, so it has a sports safety DS-0869