Native Eyewear Lynx Polarized Sunglasses N3 polarized lenses filter blue light, minimizing haze so you get greater clarity, color and contrast Interchangeable lens system, Sportflex lens included Co-injected Rhyno-Tuff Air frames seemlessly incorporate our grippy, comfortable molding right into the plastic to help keep your shades in place Optimal fit for large to extra large profiles Mastoid temple grips rest comfortably behind your ears on the mastoid bone