Sublime Optics Replacement Lenses for Arnette Stance AN4020 plastic frame polycarbonate lens polarized Lens width: 55 millimeters View tint - Grey (top) Fading to Clear (bottom) - 99.9% UVA, UVB and UVC FREE Microfibre Cleaning / Storage bag 1 year defect replacement warranty 60 Day money back 100% Satisfaction Guarantee Guaranteed to fit Stance AN4020 - Easy installation