Professional Polarized Aviator Indoor Summer Cycling Driving Fishing Glasses Outdoor Sports Sunglasses Yellow sunglasses bifocal glasses police Metal frame plastic lens polarized Lens width: 71 millimeters Lens height: 40 millimeters Bridge: 17 millimeters Arm: 125 millimeters TR90 SWITZERLAND : A Swiss technology, this thermoplastic is the material used in all of our sunglasses. Its extreme flexibility, durability and light weight make it the perfect material for performance eyewear. All of our lenses block 100% of UVA, UVB and UVC rays, and harmful blue light to 400nm. These harmful rays are a leading cause of cataracts, skin cancer and wrinkles around the eyes-all great reasons to block them out. As with any piece of high-performance equipment, weight is an important factor. TR90 is incredibly lightweight, which contributes to the comfort of our eyewear and the tendency to forget youre wearing it. Adjustable nose pads are available in some of our design. A great feature for customizing the fit of your glasses, they are especially beneficial for those with hard-to-fit faces and anyone who needs to accommodate long eyelashes. Beyond fit, adjustable nose pads allow you to modify airflow and ventilation behind the lens by providing the ability to increase or decrease the space between the glasses and your face. Polycarbonate is the extraordinarily durable thermoplastic thats used in bullet proof glass, riot shields and astronaut helmets. Its the ideal material for performance eyewear because of its high impact resistance, inherent UV protection and light weight. All of our lenses are made of polycarbonate.