All-weather use nylon is probably the best material for producing dog leashes. They are easy to clean, super lightweight and soft. Walk and train your American Bulldog with safety and comfort. They can have one snap-hook or two snap-hooks, some of them have extra stitching for additional durability. Check the models with inside Nappa padded handles - they will never rub your palms. These are strong and durable products with has good-looking appearance. If you need to walk two or even three dogs simultaneously, purchase nylon couplers with strong snap-hooks.