Tifosi is an Italian word meaning enthusiast or fan. Founded under the basic principle that quality eyewear should be available to the masses, Tifosi Optics has been designing and distributing technologically-advanced, value oriented sunglasses for sports enthusiasts since 2003. Whether it's cycling, golf, running or fishing, Tifosi has you covered with a range of lens technologies and sleek, lightweight frame styles. Tifosi Optics lenses are made from polycarbonate material and always offer 100 percent UVA/UVB protection. Made of Grilamid TR-90, a homopolyamide nylon characterized by an extremely high alternative bending strength, low density, and high resistance to chemical and UV damage. Plastic frame. Interchangeable lens. Non-Polarized. 100% UV protection coating. Lens width: 59 millimeters. Lens height: 37 millimeters. Bridge: 12 millimeters.