The Oakley Holbrook design fuses modern technology with classic, timeless style. Performance and style is created by the metal rivets and Oakley icons on this iconic American frame design. PRIZM™ is a revolutionary lens technology O-Matter™ stress-resistant frame material  Matte Brown Tortoise Frame Patented High Definition Optics®  Plutonite® Lenses offer top UV Protection Superior optical clarity and razor-sharp vision at every angle lightweight and durable for all-day comfort and protection Filters 100% of all UVA, UVB, UVC and harmful blue light up to 400nm Polarized against glare Not Z87 rated Oakley SI Holbrook™ PRIZM™ Tungsten Polarized Tortoise Glasses OO9102-B9