Oakley Batwolf™ sunglasses are about original style, and it s a clean look of authenticity that makes the statement. A single continuous lens sweeps across a comfortably lightweight O Matter™ frame. Two interchangeable icons are included to change your look in seconds. We designed this frame to fit comfortably on medium to large faces. Frame Interchangeable Square O Icons Comfortable fit on medium to large faces via extended wrapped frame geometry Precision and durability of sculpturally integrated hinge mechanisms with dual action CAM Durability and all-day comfort of lightweight, stress-resistant O Matter® frame material Lens Optical precision and performance that meets ANSI Z87.1 standards Impact resistance that meets ANSI Z87.1 standards for high-mass and high-velocity impact UV protection of Plutonite® lens material that filters out 100% of UVA/ UVB/ UVC& harmful blue light up to 400nm Glare reduction and tuned light transmission of Iridium® lens coating (optional) PRIZM™ Lenses Prizm™ is a revolution in lens optics built on decades of color science research. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility. Additional pair of interchangeable Square O icons included