KOO Sunglasses Koo demos photochromic

Designed for the winter season, when weather and light conditions can change rapidly throughout the day, workouts and runs can start in the dark and end in the headlamp, and the general daylight is not deep and warm, but very diffuse and anodyne.- Anti-fogging inner lining- VLT% variable photochromic- 100% UV protection- Contrast enhancement- Light increasing effect in dark conditions, light equalizing in brightness