Native Eyewear Sightcaster Polarized Sunglasses - The most innovative and advanced polarized lens on the market. Native's Premium polarized lenses block up to 4X more infrared light than regular polarized lenses, pass Z87.1 testing, provide UV protection up to 400nm, and by significantly reducing blue light and selectively filtering UV, they deliver high contrast, crisp definition, and peak visual acuity. Fit Profile: Large/ X-Large Premium Polarized Lens Technology Co-Injected Rhyno-Tuff Air Frames Cushinol Nose Pads & Temple Tips Cam-Action Hinges Mastoid Temple Grip Interchangeable Lens System Made of eco-friendly material