You choose your shoes, your schedule and your destination. Now, how about the view?
Nike and Transitions Optical, leading provider of adaptive optical and performance sun lenses, teamed up to create the Nike MAX Transitions Speed Tint — lenses that adjust to variable light. The lenses are featured in the Nike Tailwind 12, high-performance sunglasses designed specifically for runners.  With these game-changing shades, the lenses adapt, as the light changes, helping athletes stay focused and comfortable. 

Reduced Light Exposure

Runners on the road face both direct sunlight and harsh glare reflected off asphalt. They also tend to focus their eyes on a single spot for extended stretches. The Nike Tailwind 12 with Nike MAX Transitions Speed Tint is precision-engineered to help reduce exposure to the tiring and damaging high-frequency light by adapting to the environment, becoming lighter or darker for peak visual acuity. The lenses help relax the wearer's eyes on the run, automatically moving from 13 percent visual light transmission to a 49.7 percent VLT.

Optical Sweet Spot

Because running rarely happens in a straight line, the Nike Tailwind 12 is also engineered with Nike MAX Optics technology, designed to give superior vision in a larger than average field of view.
Nike MAX Optics technology, available in all of Nike’s performance sunglasses, helps provide zero distortion when looking straight ahead and minimal distortion across the curve of the lens. Engineers identify the best optical zone, cutting the lens precisely where the line of sight aligns with the optical sweet spot.

Advanced Vision Technology

The integration of these technologies into one lens makes Nike MAX Transitions Speed Tint one of Nike’s most advanced running lenses.
Informed by athlete insights, the design delivers a comfortable, functional fit in a lightweight package.
The Nike Tailwind 12 is part of a collection of sunglasses with engineered Nike MAX Transitions lenses that also includes the Nike MAX Transitions Golf and Outdoor tints. The Nike Tailwind 12 is available along with other styles in the collection through Nike.com and select optical retailers.

Source Nike