Key features

• •HIGH QUALITY AL-MG FRAME - Al-Mg frame is relatively light in weight compared with ordinary metal frame. And It is tough, corrosion resistant, extrusion resistant, high wear resistance, safety and environmental protection. These sports sunglasses are perfect for both men and women.
• •The carbon fiber arm is the newest type of eyeglass material, which is lighter than any other on the market. Tests have shown that carbon fiber glasses of the same size are about 30% lighter than titanium frames and less than a quarter of the weight of ordinary metal glasses, making them very comfortable and light to wear.
• •PERFECT ALL ROUNDER - High strength, good toughness. High strength, good toughness. Carbon fiber, like diamonds, is made of carbon, so it's very tight and hard. Carbon fiber glasses are lighter than aluminum glasses, but harder than steel. They are more than 10 times stronger than iron. Carbon fiber is chemically stable, resistant to acid, alkali and salt. It is superior to other materials in anti-corrosion and can be kept intact in damp and harsh environment.
• •UV 400 PROTECTION - Bircen polarized sunglasses have a UV rating of 400, which means they block 99% to 100% of UVA and UVB radiation, without the haze and optical distortion of traditional polarized lenses. Polarized lenses optimize vision for maximum clarity and accuracy. These sunglasses are perfect for fishing, driving, playing on the beach, exercising, and any other adventure with a polarized lens.
• •30 DAY MONEY BACK GUARANTEE - All BIRCEN customers enjoy 30 Day Money Back Guarantee. Customers can return and get refunded in case the purchasing is not satisfactory for any reason. You have no risk to try and we will provide you the best service!