The 100 percent accuri anti fog lenses are replacement lenses to fit all racecraft amp accuri goggles the 100 percent lenses come in a variety of different colours clear or mirrored which colour you go for depends on the weather conditions yoursquore riding in clearer lenses provides maximum amount of light allowance for all conditions whereas the orange lens increases depth perception and contrast which is great for overcast conditions yellow lens improves the contrast and definition