Rudy Project Kelion sunglasses pair a Rilsan frame with ImpactX photochromic lenses to deliver adaptable, high-clarity optics for cycling and multisport activities. The design emphasizes ventilation and a secure, adjustable fit for extended active use. Key attributes: Black gloss | Rilsan | ImpactX photochromic lenses | Mirrored RP Optics to reduce glare | 100% UV protection | Lightweight and durable | Adjustable nosepiece | Adjustable temples | Interchangeable/replaceable lenses | Compatible with prescription RX insert | Wraparound shield | Ventilated frame (PowerFlow) | ErgoNose adjustable nosepiece | High base-curve lens geometry | Dimensions & fit: Width 144 mm | Height 62 mm | Temple 125 mm | Weight 36 g | Base curve 5.2 | Optimal for large faces | One size | Composition & care: Rilsan (polyamide) frame | ImpactX photochromic lens | RP Optics mirrored coating