Corven Black ROUND MEN Hand PolishedWidth-Nose Gap-Height Measurements: 145-22-49

Hand PolishedWidth-Nose Gap-Height Measurements: 145-22-49 mmLenses: Flat - base 0°Hinge: Five-barrelFront thickness: 5

CR-39 has the highest Abbe value of any lens

- Frame Color: Gold/Black

June Tortoise | Unisex Shape

Corven Black ROUND MEN Hand PolishedWidth-Nose Gap-Height Measurements: 145-22-49Corven Black Unisex Shape. Frame Color: Black Lens Color: Dark Grey 2 Year Warranty Technical Information: Hand Polished. Width Nose Gap Height Measurements of this pair: 145 23 48 mm Hinge: Five barrel Lenses: Base 2 Front thickness: 4. 8 mm Temples thickness: 3. 5 mm Lenses Technology: CR 39 Custom Made Lenses CR 39 is made by polymerization of diethyleneglycol bis allylcarbonate (ADC) in presence of diisopropyl peroxydicarbonate (IPP) initiator.