Scott Classic Goggles provides 100% UVA Radiation Protection. Solar radiation is formed by visible and invisible waves measured in nanometers. The shorter the wavelength frequency, the more damaging the wave is to the eye. UVA wave rays [ultra-violet radiation in the 320-380 nm range] are absorbed by the lens of your eye and can cause damage. Every Scott Classic Goggles has been optically engineered to screen out 100% of harmful UVA rays in this range