Ascent's titanium alloy frame is a blend of updated aviator styling and some of the most advanced frame construction available. Light, strong and flexible titanium alloy temple pieces taper off to less than 1.0 mm thick, seamlessly conforming to your head and headset for any duration flight. FLT lenses by Method Seven are the first to offer notch filtering in lightweight, shatterproof lenses. Constructed from a durable polymer with dual high-quality coatings, FLT lenses are at the cutting edge of aviation optics and weigh 30% less than SKY lenses. Enhanced contrast, impossible clarity, world-class performance: these are not your father's aviators. The FLT 18% (Medium) is a great choice for general and mixed conditions. Though it has a similar VLT to most other avionic sunglasses, notch filtering and world-class protection make this lens superior to others on the market.