The Madison Code Breaker Glasses are as versatile as they are stylish. The Code Breaker allows for quick and clean lens switching while maintaining looks and functionality. As home as it is on the trail or on the road, the single shield lens gives great coverage and a huge field of vision. The clever twist lock lens is a genius system that allows for quick lens removal and installation, ideal when living in an area with variable weather conditions. Madison Code Breaker Glasses Features Performance polycarbonate lenses give great optical clarity along with full UVA and UVB protection The durable polycarbonate lens is both impact and scratch resistant An adjustable nose piece allows you to dial in the perfect fit The frames have been developed to work seamlessly with your helmet for maximum comfort The twist lock lens system allows for quick and convenient lens swapping Includes a soft case for lens protection on the move Full UVA and UVB protection An optional RX insert is available for prescription lenses