The UV protection of the sun lenses used to be not as mandatory as it is today. A sun protection guarantee according to today's EU standard cannot be given in full for glasses that are below 400 nm (nanometers). These offer only partial protection against the short-wave UVA rays, however complete protection against the harmful long-wave UVB rays. The sun protection is indicated in the product description in the shop: 340 nm to 400 nm. Most old sunglasses, however, have real lenses (nowadays rather unusual), which in turn enhances them for many. Upon request, all sunglasses and glasses frames can be fitted with new sun protection glasses and delivered. If you are interested, please ask for more details by e-mail or phone, including extended delivery times and prices.