Costa Del Mar Sunglasses style Zane is a Rx-able rectangular nylon sport wrap with polarized polycarbonate lenses. The Zane is designed with corrosion-resistant stainless steel hinges adjustable wire core temples and special materials on the saddle nose bridge and temples to ensure comfort and minimize slippage. Vented temples reduce fogging. The Costa Del Mar logo is engraved on the temples. These Costa Del Mar Sunglasses have lightweight polarized polycarbonate lenses that provide amazing clarity and 100% UV protection.