Rudy Project Deltabeat is a lightweight, wraparound performance sunglasses model built for cycling and running. It pairs quick-change, photochromic ImpactX lenses with an ultralight frame for stable coverage across changing light conditions. Key attributes: Gray | Impactx Red | Rilsan Clear | Photochromic ImpactX lenses | 100% UV protection | Quick-change lenses | Enhanced ventilation to reduce fogging | Lightweight and durable | Adjustable anti-slip nosepads | Anti-slip temple tips | Interchangeable lenses | Prescription-ready (Optical Dock compatible) | Wraparound shield shape | Ultralight geometry | Powerflow ventilation | Total Comfort Fit | Dimensions & fit: Weight: 31 g | Eye size (A): 69 mm | Lens height (B): 51 mm | Bridge (DBL): 11 mm | Temple: 131 mm | Base curve: 8 | Wraparound fit | Total comfort fit | Stable, close-to-face fit | Composition & care: Rilsan Clear (frame) | ImpactX (lenses) | Wipe lenses with a microfiber cloth; store in the included hard case when not in use.