Maxx HD Rough Rider #11 Blk Frame Sunglasses, ALL SPORT MXRR11HD Plastic polycarbonate frame polycarbonate lens TR-90 half-frame design with style and function The lenses are virtually frameless for maximum vision enhancement Stylish design is engineered with a small TR-90 half frame for a snug fit HD - High Definition Clarity, No Peripheral Distortion UV 400 - 100% UV Protection