Extremely precise lines and finely calculated angles - that's how the perfect fit of our DRIFT sunglasses is created. Polarized lenses guarantee glare-free vision and intense contrasts. The material mix of robust TR90 and non-slip rubber provides the style factor. Frame: TR90 + Rubber TR90 is a thermoplastic material developed in Switzerland, which is extremely durable, flexible and light. Rubber ensures optimum grip. Lens: Polycarbonate lenses are robust, break-resistant and offer excellent UV protection. Spectacle shape: Round/Base 8 Polarized: Polarizing lenses are particularly advantageous for sports and leisure activities. They absorb dazzling light reflections, enhance contrasts and improve colour perception. Optimal face shape: round or oval prescription glasses possible - These glasses are optically glassable. The best way to do this is to contact the optician of your choice.