The Shredder Series was designed for style and comfort. Made with spring hinges that allow the arms of the frame to bend an additional 30 degrees outward, this prevents the uncomfortable squeezing pressure above your ears and provides more stretch for the best comfort possible. In addition to the comfort produced by the spring hinges, the Shredders also have adjustable nose pads, allowing you to customize the fit. All of our glasses are made of a high quality polycarbonate. This means they are lightweight and durable, and provide 100% protection from the sun’s harmful UVA and UVB rays.