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 59mm lens width; 19mm bridge width; 126mm temple length The Anhingas frame namesake is one of the most versatile and fascinating coastal birds in the US, diving deep into the water to catch dinner and just as comfortable flying above. The dual-comfort nature of the "snake bird" is a nod to this new frame, which offers a sport fit and wears with enough style for an everyday carry. Rheos® floating sunglasses are the only complete line of sunglasses that float in water with the same style and comfort as an everyday pair of shades. Due to our specialty TPX® material, the frames are 20-30% lighter than standard sunglasses, which allows them to float without any additional buoys or bumpers. The lenses are polarized with 100% UV protection, including dual anti-scratch and anti-reflection layers. Whether you’re hanging out on the lake or floating on the surf, you can finally protect your eyes without worrying about losing your shades. You've never imagined sunglasses as light and comfortable as these!