YUFENRA Polarized Vintage/Retro Sunglasses Reflective Revo Color Full Mirrored Lens plastic frame plastic lens polarized Lens width: 58 millimeters TAC POLARIZED LENS- The Tac(Triacetate Cellulose) Lens includes 9 layers,100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. TR90 Material Frame:The frame of the sunglasses is made of TR90(plastic titanium known as ) what is a polymer material with memory, is the most popular ultra-light frame of international material with super toughness, impact and abrasion resistance, and low friction coefficient, can effectively prevent the movement , the result of frames breaking, friction caused by the eye and facial injuries. good chemical resistance, high temperature environment is not easy deformation. Super Light,Weight: only 20g(0.7oz) 30 Day Money Back Guarantee- All YUFENRA 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.