Material: PC TAC Polarized Lenses:UV400 protective layer blocks 100% of harmful UVA and UVB rays. Visually restores true color and eliminates reflected or scattered light.TAC polarized triacetate lenses are impact and scratch resistant, lightweight and durable Lightweight TR90 frame:Cool Black Unbreakable sunglasses are made of premium TR90, ultra-light, flexible and durable, with flexible thermoplastic memory material produced through Swiss technology. Anti-slip nose pads, comfortable and skin-friendly. Unique flexible hinge design, no head pressure. Perfect all-rounder:The frame design is a classic and timeless style for men's fashion. In addition, it adds more sporty elements. It is the choice for driving, fishing, climbing, running, hiking, biking, skiing, boating or other outdoor activities.