Tifosi Seek FC Photochromic Sunglasses give you that and more. The Fototec photochromic technology automatically lightens or darkens in response to changing light conditions, giving you exceptional clarity. The polycarbonate lens is shatterproof and scratch-resistant, and shields your eyes with 100% UV protection. Tifosi Seek Fc Wrap Sunglasses Features: Grilamid TR-90 Nylon framePolycarbonate lensNon-Polarized100% UV protection coating