Caterpillar 8018 is a sporty rectangle front frame with a tread textured temple and machine pressed metal CAT logo plaque Matte black frame is constructed from lightweight yet durable polycarbonate with silver mirror polarized TAC lenses that provide Category 3 UVA and UVB protection Frame Measurements: 61 mm lens width | 14 mm bridge width | 133 mm temple length | 38.8 mm lens height Fully RX'able – CAT Sunglasses have been engineered to be glazed by an optician to carry your personal prescription Caterpillar has a long and rich history in building powerful, reliable engines and tough equipment for the biggest jobs around the world, every day. CAT sunglasses are the toughest shades we make, engineered for durability and superior vision.