Oakley Sunglasses Monster Dog - Medium to Large Fit. O Matter frame material not only meets the demands of professional athletes, it exceeds the durability requirements of industrial applications that include chemical exposure and environmental extremes. Oakley's dual-lens eyewear with interchangeable lens system, this chameleon lets you adapt instantly to any light condition. Spherical 8.75 base XYZ Optics. Durable, lightweight polycarbonate lenses provide startling optical clarity and protection against high-mass and high-velocity impact. 100% UV Protection. 1 Year Warranty.