Metal frame Tri Acetate Cellulose lens Polarized UV Protection Coating coating Lens width: 62 millimeters Lens height: 49 millimeters Bridge: 142 millimeters Arm: 140 millimeters HIGH QUALITY FRAMES-This premium square sunglasses is inspired by the classic aviator design with a double bridge for the frame. The adjustable nose pads make the wearer more comfortable, and the Spring Hing suitable for any face shape. The color grading in the lens make it more special. TAC POLARIZED LENS - Lenses are made of Triacetate cellulose(TAC) material. TAC has excellent optical properties can prevent the shrinkage of the PVA polarizing film, and the high-strength surface has scratch resistance.Restore true color, eliminate reflected light and protect eyes perfectly. PRODUCT DIMENSION Lens Width: 62mm(2.44inches) | Lens Height:49mm(1.93inches) | Total Frame142mm5.59inches|Temple Length:140 mm(5.51inches) | Nose Bridge: 17mm(0.67inches). GIFT IDEAS PACKAGE Sunglasses*1. It is also a gift packaged ready, making it a wonderful yet practical gift idea for friends and family LIFETIME WARRANTY - We provide 180 Day Money Back Guarantee and a worry-free lifetime warranty, You can return the pack and get full refunded for any reason. What is Polarized lens advantage? If you want to view objects that are at ground level in bright conditions, then polarized lenses allow you to see with better color contrast since the horizontal light waves are filtered away. The enhancement in color perception allows for better vision clarity compared to the over-exposure your eyes would process if you werent wearing the lenses in the first place. Because your eyes arent working as hard to pick out specific objects in the environment, you can avoid fatigue-related issues like headaches more often thanks to this product.