For a lighter outdoor experience, Beneunder goes a step further by launching our new ultra-thin folding sunglasses - a new lightweight metal and patented INTG-FOLD ultra-thin folding design with a thoroughly comfortable wearing approach. Slimline Polarized Folding Sunglasses Hightlights: Advanced RAYTURN filter technology with HD glare reduction； Dual UV400 protection, effectively blocking 99% of UV ray； Light and flexible at just 25g in weight, made from thin, durable metal.