Costa Del Mar Galveston C-Mates Polarized Bi-Focal Reading Glasses Nylon frame Plastic lens Polarized Lens width: 67 millimeters Lens height: 41 millimeters Bridge: 16 millimeters Arm: 125 millimeters Comfortable large fit Stainless steel integral hinge ; Durable co-injected nylon frame 100% UV light blockage for max protection. Includes hard case Plastic lenses are lightweight, impact- and scratch-resistant