Two toned cardigans are so cool, they add a little character to the good ol school teacher garb. They look better if the colors are clearly contrasting like the last one pictured(both cardigans pictured below are Topman) all you need to complete the look are a pair of jeans and dress shoes/plimsolls... you know days when you try out all the outfits in your wardrobe and still can't find what to wear, the cardigan saves the day and makes you look elegant without effort.