Taking the Shifter model to the next level, the C-Shifter high-performance sunglasses feature a stylish, cylindrical half-rim design. The frame is made of lightweight, flexible, and ultra-comfortable TR90 nylon frame. Meanwhile, Thermogrip temples and nose piece ensure a stabilised fit, with added grip no matter the intensity of the action. Volt Gun Cat 3 Lens Tint Base: Grey Light Transmission: 15% Volt Lens Technology Bolle's image-enhancing Volt Lens technology changes the game when it comes to performance eyewear. Developed by AI, it provides 30% colour enhancement, twice that of competitor lenses while maintaining the natural white point. You'll also benefit from increased depth perception and a polarized finish for improved clarity for water sports. When a clear view is vital, nothing beats Volt. Standard Volt enhances a single colour while diminishing others while Volt+ enhances colours across the whole spectrum. The Volt lens also provides 100% UV protection and high-impact resistance.