Spy Logan Ansi Sunglasses With a nearly indestructible frame, the Spy Logan Ansi Sunglasses are designed for durability and longevity. These sunglasses offer lens retention and high mass impact resistance, ensuring reliable performance in various conditions. The snap hinges provide added convenience, making them a practical and resilient choice for your eyewear needs. Nearly indestructible Grilamid frame structure Ansi Z87.1 certified for lens retention and high mass impact resistance Happy Lens Technology boosts mood and alertness Happy Boost Lens Technology maximizes color contrast up to 30 (select models) Snap hinges Bridge width: 13mm Temple length: 124mm Lens width: 60mm