A large, Square Rectangular Aviator based on our unique premium architecture makes the Estero a standout pair. With bold proportions, a double bridge and our distinct sculpted nosepads, these frames not only look the part, but are just as comfortable as any pair of Sunskis. The Strong and durable metal frame is made of palladium coated and electroplated SAE 304 stainless steel to handle any adventure you throw at it. Subtle details hint of the aviation it was inspired from, like the filigree pattern around the lens perimeter that mimics the silhouette of a concord airplane, or the sculpted surface on the arm inspired by a wing. The large square lenses provide great coverage from the sun while making you look like you could pilot any plane you walk into. 100% UV A/B/400 Protection All lenses are polarized, block 100% UVA/UVB/UV400 wavelengths and pass FDA basic impact test Rilsan G850 (Ultralight) and electroplated stainless steel frame Solid polarization CR-39 lenses Stainless steel hinges with lock-tight screws All lenses are polarized, block 100% UVA/UVB/UV400 wavelengths and pass FDA basic impact test.