1. Photochromic lens for changing light conditions one pair of glasses for different riding environments. The photochromic lens automatically adjusts darkness based on uv exposure, staying clearer in low light and darkening under strong sunlight. Enjoy comfortable vision without changing lenses during your ride. 2. Prescription ready design for myopia riders ride comfortably without wearing regular glasses underneath. The detachable prescription insert frame allows riders to install customized optical lenses, providing a practical solution for cyclists who need vision correction. 3. Uv400 protection & revo coating for clear vision reduce glare and protect your eyes during outdoor rides. Uv400 lenses help block harmful uva and uvb rays, while the revo coating reduces reflections from roads, vehicles and bright surfaces. 4. Lightweight wraparound design for better protection wide vision with less wind interference. The large curved lens design provides expanded peripheral vision while helping block wind, dust and small particles during cycling. 5. Comfortable adjustable fit for long rides stay secure and comfortable from short trips to endurance rides. The flexible tr90 frame, adjustable nose pad and anti-slip temples provide a stable fit for different face shapes. The lightweight design reduces pressure during extended wear. Ideal for:long-distance cycling, commuting, running, camping, hiking, and outdoor exploration. Lens option vlt range best for purple photochromic 16% ...