Air 2 features next-level Revo technology with a 100% titanium frame weighing less than 0.5 oz, making it the lightest Revo design ever made. The minimalist single-bridge sporty aviator shape offers uninterrupted panoramic views and gives the feeling of wearing nothing at all. Air 2 also features groundbreaking polarized photochromic lens options. Lightweight and impact-resistant, our photochromic lenses automatically lighten and darken in different light conditions to protect your vision and enhance clarity.