Combining aggressive design with superior optical protection, the Wiley X Twisted is created for the bold. These sunglasses meet and exceed ANSI Z87.1 – 2003 standards for high velocity impact safety, and the frames are ANSI-approved to accommodate prescription safety lenses. The lenses feature Wiley X’s polarized lens technology, which adds 100% polarization to 100% ultra violet protection to deliver unmatched visual clarity and contrast. No matter where you are or what you’re doing, these sunglasses are guaranteed to keep your eyes protected and have you looking your best. These shades are designed to fit medium and large head sizes.