The Leonard Series was designed to have a classic and stylish look. All Leonard's come with spring hinges that bend outward to an additional 30 degrees for the best comfort possible, so you never get that uncomfortable squeezing pressure above your ears. Our glasses are made of a high quality polycarbonate which makes it light weight and durable. The lenses are also Polarized, which will reduce a significant amount of glare and add clarity while blocking 100% of UVA and UVB rays to protect your eyes from the harmful sun rays.