Converse "Mojave" Lightweight & Comfortable Designer Reading Glasses Metal frame plastic lens non-polarized Lens width: 53 millimeters Bridge: 17 millimeters Arm: 140 millimeters Lightweight & Comfortable Frame; Spring Hinged for Added Comfort Unisex Full Frame Design ; Adjustable Silicone Nosepads Case Included 18 different magnifying powers from 0.25 to 6.00 are available