The ergonomic design of the Nike Tailwind Running Sunglasses gives the best sun protection and visibility as you push yourself to the limit. The Interchangeable Lens System adds maximum sport performance in all light conditions. An adjustable, ventilated nose bridge improves airflow with reduced fogging and better grip. Cam-action spring hinges lock into place. Nike Flying Lens Technology keeps your vision fog free and consistent. Swoosh design trademark on temples.