Sleek architecture and sculptural reliefs gave our original Sliver its overwhelming popularity, and the timeless design is now available in this XL edition with extended lens height for larger head sizes and those who want an expanded field of downwardview. PRIZM is a revolutionary lens technology that fine-tunes vision for specific sports and environments. See what youve been missing. Click here to learn more about Prizm Lens Technology. Three-Point Fit holds lenses in precise optical alignment while eliminating pressure points. Plutonite Lenses offer top UV Protection filtering 100% of all UVA, UVB, UVC and harmful blue light up to 400nm. O Matter stress-resistant frame material is both lightweight and durable for all-day comfort and protection.