N3 Polarized lenses block 40% of infrared light (decreasing Eye fatigue), offer Blue light filtering and 100% UV protection to minimize haze and enhance clarity Co-injected rhyno-tuff air frames seemlessly incorporate our grippy, comfortable molding right into the plastic to help keep your shades in place Cushion nose pads ensure a soft feel and custom fit, regardless of nose shape or size Temple ends HUG behind your ears to keep sunglasses in place Fits medium profiles