Leather Combination Trousers Leather combination trousers come with a connecting zipper and also protectors, which makes them the ideal complement to a leather jacket. Many leather combination trousers in the Louis range can be combined with various jackets. Important: Leather is a natural material. It shapes itself to your body, and stretches a little with time. When buying leather trousers, you should therefore check for a good fit. If you're in any doubt, you can order two different sizes from Louis online and try them out. Louis will take back any item that does not fit or which you do not like.