The PivLock V90 Max features a proprietary, patent-pending temple/hinge piece that compliments what can only be described as the lightest performance interchangable, rimless sport style in the world today. Both the temples and the nosepiece remove easilly, making the task of swapping out lenses easier than ever. Occular Docking System is included with RX orders. You can purchase frame only and Occular Docking System separatly if you want the RX filled by your Optician.