Polarized, UV400 lenses with hydrophobic finish (like RainX for your lenses) and dual anti-scratch & shatterproof technology Ultralight TPX frame construction for extreme durability and 20% lighter than average frames for floating effect and long-term wear Microfiber cloth included with every purchase 57mm lens width; 18mm bridge width; 145mm temple length For adventurers that love extra breathability and the most air ventilation of any frame, the halfshells are the perfect fit. Check out the variety of lens and color options to find your favorites and hit the river or trails with form and function at its best.