The Morrisons are designed to have a classic and stylish look. The frame is made from a Polycarbonate material to keep it lightweight and durable. The lens is also made from Polycarbonate to give it 100% UVA and UVB resistance that will protect your eyes from the harmful rays of the sun. Every Morrison frame has spring hinges that will bend up to an extra 30 degrees to provide you with the best possible fit and comfort for your head. The nose pads are adjustable so you can fit the glasses to your liking.