* Optical technology is exclusively applied in Oakley Monster Dog Royal Blue Purple Lens Sunglasses to offer a high quality of vision. The special technology in the Oakley Sunglasses ensures you to have a distortion free clear vision, making your eyes cool and smart looking.* Oakley Monster Dog sunglasses are one of the largest jacket design shades by Oakley. * The Oakley Active Sunglasses provides perfect protection, comfort, and type with a thick O matter frame and true Oakley metal icons. * This is the largest sunglasses ever made by Oakley, but its extremely lightweight. * Whether youre skiing, hiking, walking or just cruising around, the patented XYZ Optics of Oakley Sunglasses make you engage in the view with complete clarity. * The Plutonite lenses of Oakley Canada actually surpassed ANSI Z87.1 standards for optical performance, so your perspective retains clear even on muggy dog days.