Motorcycle Leather Trousers Leather trousers never go out of fashion, and not just for bikers. From classic 5-pocket jeans cut to fully featured touring trousers, you will find exactly the right leather trousers for your style and budget. 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.