Now you can change your lens color for fun or function! Lenses are designed for the ILS style Doggles available in 5 sizes (XS - XL). Order according to the size Doggles that you own. Clear is great for night driving. Yellow if perfect for dusk or early morning. Go Joe Cool and get a mirrored set. How about a hot pink set for that special little girl? Or just replace any set that is too old or damaged!