Tifosi Slip Sunglasses - With Free Sunglass Retainer plastic frame plastic lens polarized Lens width: 133mm Comes with FREE Sunglasses Retainer Frames are made of Grilamid TR-90 Hydrophilic rubber ear and nose pieces for a no-slip fit Vented lenses improve air circulation, prevent fogging All Tifosi lenses provide 100% protection from all harmful UVA & UVB light rays