Our dog collars come in 3 widths (3/8", 3/4", 1" ) and 4 sizes. The leashes are 5 feet long and come in the same 3 widths (3/8", 3/4", 1" ). We can make custom collars and leashes for your pet. For instance, if you want a longer or shorter leash or even a Medium-size collar in the 1" width, just let us know. We can also custom make a harness according to your dog's chest size. We will be glad to accommodate your special requests.