Nagata Speed Blade Tortoise, D+ Amber Mirror

Made in Japan.

The Nagata Speed Blade for runners is an ultra-lightweight nylon and titanium frame construction. Our D+ lens is handcut and polished in Japan for unrivaled visibility in various performance conditions. D+ Amber Mirror was developed for physical pursuits requiring maximum sun protection. The mirror coating facilitates additional infrared screening. The lens offers 100% UVA/B protection while transmitting 8.73% of visible light and 6.7% of blue light.