The oakley crowbar tear offs are the most advanced tearoff system on the planet and offers the highest possible level of visual clarity oakley39s lamination process keeps dirt and mud from invading the lens layers it also minimizes the performance killing problem of refraction and protects your eyewear that means you get the clearest cleanest view of the course without optical distortion that makes your eyes lie to your brain each stack has seven tearoffs and multiple stacks can be mou