O Matter frame Plastic lens Polarized Lens width: 57 millimeters Lightweight O Matter frame material with Square O metal icon and front rivet accents 6 base lens geometry with HDO Polarized and Iridium options available Available with Prizm lenses to enhance color, contrast and detail for an optimized experience Holbrook is a timeless, classic design fused with modern Oakley technology. Inspired by the screen heroes from the 1940s, 50s, and 60s, this design epitomizes the spirit of exploration and adventure. The iconic American frame design is accented by metal rivets and Oakley icons, perfect for those who seek equal parts performance and style.