These glasses can be optically glazed. No more compromises when it comes to mirror colour: for the first time, the collection is available with high-quality MPO mirrors in your individual prescription in bold colours., TR90 is a thermoplastic developed in Switzerland that is extremely durable, flexible and lightweight., Polycarbonate lenses are robust, break-resistant and offer excellent UV protection., Polarizing lenses are particularly advantageous for sports and leisure activities. They absorb dazzling light reflections, enhance contrasts and improve colour perception., Red Bull branding.