Oakley Exchange Optical Frame pairs Oakley performance design with a clean rectangular profile. Its lightweight construction and prescription-ready front make it suited for everyday wear and all-day comfort. Key attributes: Gray | Nylon | Lightweight | Durable | Compatible with prescription lenses | Spring hinges | Rectangle shape | Keyhole bridge | Full-rim frame | Dimensions & fit: Calibre: 54 mm, 56 mm | Bridge: 17 mm | Temple/Arm: 136 mm | Height: 41.0 mm, 43.0 mm | Composition & care: Nylon | Clean lenses with a microfiber cloth. Avoid abrasive cleaners and strong chemicals. Store in the protective case when not in use.