The Crevalle is the perfect choice for outdoor enthusiasts (such as hunters and fishers) looking for a high performance-oriented sunglass.Built to withstand the active lifestyle, the lens offers excellent UV protection and reduces glares. The nose bridge and temples are made of matte thermoplastic nylon for a lightweight, durable and comfortable fit. The inserts are made out of black rubber silicone, which prevent slippage during intense activities, making sure the glasses stay on your face. Indentations at the temple tips allow you to attach a leash for alternative wear.