Anyone who goes trail running in autumn will be familiar with the problem: no sooner have you emerged from the shade of the woods than the low-hanging sun dazzles you. A few minutes later, you’re back in partial shade. Photochromic sunglasses are the answer.
Adidas Sport Eyewear has fitted the new KENTRO SP0123 02Z with photochromic POWERVIZN™ lenses, which automatically adjust their tint to suit the light conditions. The filter category ranges from 1 to 3, with light transmission varying between 50 and 10 per cent – without the need for manual adjustment. In diffused light, the lens remains light in colour; in direct sunlight, it darkens.
Filter categories 1–3 are the classic, tried-and-tested options for photochromic glasses. However, filter category 1 also means that the glasses do not function optimally in the dark, as the base tint then becomes noticeably distracting.
To optimise contrast, Adidas has opted for a purple lens base. This is designed to make green and brown tones stand out more clearly against natural terrain – an advantage on trails and forest paths, where roots, stones and uneven ground require quick reactions. A silver mirror also reduces distracting reflections in bright sunlight.
The frame is made from TR90, a flexible and lightweight plastic that provides a wide field of vision. Rubberised nose pads and temple tips are adjustable and are designed to keep the glasses securely in place, even during intense rides. Ventilation openings on the upper frame and on the temples are designed to prevent the lenses from misting up – complemented by a coating that repels water, sweat and dirt.
The KENTRO SP0123 02Z is designed for mountain biking, gravel cycling, trail running and hiking, and costs 195 euros.
In a Nutshell
- Lenses: Photochromic POWERVIZN™
- Filter category: 1–3
- Light transmittance: 10–50 per cent
- Contrast base: Violet | Mirror finish: Silver
- Frame material: TR90, full-rim
- Price: 195 euros
Laurin Lehner
Editor
