Rudy Project Nyad Sunglasses combine a high-performance photochromic lens with a lightweight, durable frame for all-day outdoor use. They’re designed for variable light conditions and are compatible with prescription solutions. Key attributes: Blue navy | Crimson | Rilsan | Photochromic ImpactX lenses | UV protection | Lightweight and durable | High optical clarity | Prescription-ready (RX insert / RX Direct) | Compatible with side shields | Replaceable lenses | Full-frame wraparound | Matte finish | Wraparound profile | Dimensions & fit: Width 64mm | Temple 130mm | Weight 30g | Base curve 8 | Optimal for medium face sizes | Face size range: small | medium | large