The eyepieces are the tinted screens that attach to the EYEFUL frame. They are available in several colors. The colors offered are smoked gray, orange, yellow, green, transparent and brown. These lens shields are mounted on the EYEFUL AKO frame and can be changed and replaced at will. A motorcycle lens must properly protect the wearer of the glasses, which is why they are categorized into different types: the categories of motorcycle glasses range from category 1 to category 4, offering a good level of tint and protection.