Syka Night-vision Glasses Anti-glare Driving Polarized New Design Eyewear Al-Mg frame TAC lens polarized Lens width: 50 millimeters Lens height: 40 millimeters Bridge: 16 millimeters Arm: 130 millimeters TAC POLARIZED LENS- 100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. TAC lens includes 7 layers. The 1st layer is polarization layer. The 2nd and 3rd layers are adhesive layers to enable durability. The 4th and 5th layers are UV protection layers to absorb UV light. The 6th and 7th layers are shatterproof layers. SUPERLIGHT, STYLISH, DURABLE- Lightweight design is ideal for usage by motorcycle and cycling bicycle, driving, running, fishing, racing, skiing, climbing, trekking or other outdoor activities enthusiasts. Fashion and stylish design, with rich color combinations of frames and lens. Polycarbonate lens and frames are impact, scratch resistant, durable and unbreakable. LIFETIME BREAKAGE WARRANTY ON FRAME & LENS - Frames and lens are unbreakable for no risk purchasing. In case any broken problem happens, contact the seller of Syka without hesitation to solve the problem until satisfaction. Syka provides lifetime after sale service for all Syka products. ULTRA LIGHTWEIGHT As with any piece of high-performance equipment, weight is an important factor. TR90 is incredibly lightweight, which contributes to the comfort of our eyewear and the tendency to forget you are wearing it. 30 DAY MONEY BACK GUARANTEE--100% satisfaction guaranteed. We are not only selling sunglasses but also providing excellent customer service. We promise if you are not happy with DUCO glasses within the first 30 days, we will refund you without any reason and take care of the returning shipping fee. SO NO RISK ON TRY!