Oakley o frame 20 roll off accessory kitthe o2 goggle from oakley initially comes with a standard lens with tear off pegs this kit will let you upgrade your goggle to accommodate the roll off system this will enable you to clear your vision with a fast and easy pull of the cord features includes oakley mud visor both load and pull cord canisters and 2 replacement film rolls fits oakley o2 gogglesbuyoakley protectionfrom chain reaction cycles the worlds largest online bike store