Chamonix has given its name to these legendary glasses. Leather glare flaps complete the classic looks and great protection. - Light weight metal frame - Detachable leather glare guards - Spectron 4 lenses with mirror finish, made of polycarbonate - Ultra violet protection class: 4 (darkest tint, not recommended for use in traffic) - Lens height 50 mm - Bridge 19 mm - Temple length 145 mm - Base 6 - Lens size 58 mm Julbo has been making sunglasses for more than 135 years. By buying Julbo, you are investing in a quality product and can rest assured the glasses offer perfect UV protection.