The Wiley X Chase Prescription Glasses merge comfort and safety. Available in a matte black, matte dark gunmetal and matte blue, this frame has metal and triloid nylon construction. The 4 base Shatterproof Selenite™ Polycarbonate lenses combined with the clarity removable side shields ensure more comfort and protection, blocking unwanted irritants. This frame also prioritizes performance, reducing eye strain, headaches and fatigue. Plus, the Wiley X Chase Safety Glasses is prescription available and also meets ANSI Z87.1 safety standards.