Best Vision with PRIZM™ Lenses. The Fall Line M features a medium fit and Ridgelock technology, allowing for quick and easy lens changes. The frameless design provides maximum peripheral vision in every direction. The soft O-Matter frame, combined with three-layer foam, offers ultimate comfort and the best fit. The high-quality Prizm™ lens technology enhances colour and contrast, so you can see the terrain ahead as clearly as possible.Prizm™ Rose Gold Iridium LensPrizm™ lenses adapt to weather conditions, ensuring optimal colour representation, maximizing depth perception, and significantly improving visibility. The lenses are injection-moulded under extreme pressure from impact-resistant Plutonite® to create a precise contour with optically correct geometry and clarity.Prizm™ Sage Gold Iridium LensPrizm™ lenses adapt to weather conditions, ensuring optimal colour representation, maximizing depth perception, and significantly improving visibility. The lenses are injection-moulded under extreme pressure from impact-resistant Plutonite® to create a precise contour with optically correct geometry and clarity.