Rudy Project Astral Sphere UTMB is a performance shield sunglass built for trail running and variable light conditions. It pairs a wraparound spherical lens with photochromic ImpactX technology for broad field of view and adaptive eye protection. Key attributes: Purple | Cabernet | Rilsan | Photochromic ImpactX lenses | Wide field of view | Lightweight (26 g) | Impact resistant | Adjustable anti-slip nosepads | Anti-slip temple arms | Includes microfiber case | Wraparound spherical shield | Matte frame finish | Prescription adapter compatible | Dimensions & fit: Weight - 0.91 ounces | 26 grams | Eye Size - 143 | Temple - 130 | Dimensions - A 143mm, B 58mm | Base Curve - 7 - Spherical | DBL - NA | Comfort fit | Composition & care: Rilsan (frame) | ImpactX photochromic lens