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 downward view.• Durability and all-day comfort of lightweight, stress-resistant O Matter™ frame material• Optimized peripheral vision of 6 base lens curvature• Available with Prizm™ lenses to enhance color, contrast and detail for an optimized experience• Polarized and Iridium™ lens options available• Available with Oakley Authentic Prescription Lenses