This is the latest evolution of the coveted Half Jacket sunglass, wrapping your vision in the razor-sharp clarity of High Definition Optics. You get all-day comfort from the lightweight design that can take punishing abuse while serving up premium optical technology. The original Half Jacket became essential gear for athletes, and version 2.0 adds to this proud heritage. It features a lightweight O Matter frame material and Unobtainium components that keep it comfortably in place, even when dripping with sweat. The Three-Point Fit keeps the lenses in precise alignment so they can give your eyes the vision of victory. If desired you can swap out the lenses with a new set. Half Jacket 2.0 features XYZ Optics to keep vision sharp and accurate all the way to the peripheral edge. All lenses are made of pure Plutonite to filter out all UV, and this premium eyewear meets ANSI Z87.1 standards for optical clarity and impact resistance. Features in brief:*Durability and all-day comfort of lightweight, stress-resistant O Matter frame material*Comfort and performance of Three-Point Fit that holds the lenses in precise optical alignment*Unobtainium components that increase grip when you sweat*Metal icon accents Lenses with this frame: Prizm Golf: Prizm lenses fine-tune vision for specific sports and environments by emphasizing colours where the eye is most sensitive to detail, and improves performance and safety by enhancing vision.