Detailed Notes on UV400 sunglasses meaning
No, UV400 and polarized usually are not exactly the same thing. UV400 refers to the volume of defense versus ultraviolet (UV) radiation that sunglasses supply. Sunglasses with UV400 protection block all UVA and UVB rays up to 400 nanometers, providing extensive defense towards damaging UV rays.The importance of UV400 security in sunglasses cannot b