The Oakley SI Ballistic Shocktube PRIZM was developed for durability in high impact activities. The industrial design and ballistic performance of this eyewear offers the ability to move quickly and overcome challenges in any environment. The high wrap, contoured frame construction keeps your frames in place during high speed maneuvers. And the Hex-key lens changing system optimizes your field of view to assess threats, while thin stem technology provides comm system compatibility. Trust the Shocktube PRIZM to supply close cover in action.