Dita Mach Three Black Frame Aviator 55 Mm Grey Lens Composite frame Gradient lens non-polarized Lens width: 55 millimeters Bridge: 17 millimeters Arm: 138 millimeters Titanium Front Frame With Plastic Lens Rim Detail Handcrafted Japanese Acetate Temples Custom Hex Screw Hinges Titanium Nose Pads; Double Nylor Detail 100% UV Protected Lens With Anti-Reflective lens Coating