The best sports jackets to wear with jeans are those that are already casual in style, often because they are made of a casual fabric such as corduroy or tweed. Fashion-forward sports jackets that are cut leaner and shorter than typical jackets also work well with jeans.
When pairing jeans and a sports jacket, it's also important to pick the right pair of jeans. Choose dressier jeans that are dark in color, that fit well and that are not distressed. Sports jackets with a relaxed cut or a bold color can be paired well with jeans. Avoid any jacket that looks as if it could be part of a suit.