Converse Digital Lightweight & Comfortable Designer Reading Glasses plastic frame plastic lens non-polarized Lens width: 50 millimeters Bridge: 15 millimeters Arm: 135 millimeters 5" Frame Width 1.25" Lens Height Lightweight & Comfortable Frame Handmade Zyl with Metal Arms ; Spring Hinged Case Included 18 different magnifying powers from 0.25 to 6.00 are available