Sun Glasses

The protection level of sunglass lenses is indicated by a category number. Category 1 lenses are suitable for cloudy and dim conditions where contrast-enhancing lenses are needed. Category 2 lenses provide light sun protection, and category 3 lenses are a great choice for summer use.The protection level of sunglass lenses is indicated by a category number. Category 1 lenses are suitable for cloudy and dim conditions where contrast-enhancing lenses are needed. Category 2 lenses provide light sun protection, and category 3 lenses are a great choice for summer use. Category 4 lenses are so dark that they are not recommended for driving.