We are a manufacturer, so we can make ANY of our collars to size. But, not every one of our collars come in multiple widths, so the best place to look for a collar for your small dog is in this section.
If you have any questions if your dog fits within these sizes, just visit this link which will explain to you how to measure your dogs next correctly: SIZING
Also, the American Kennel Club and Jen Reviews have pages packed with information on every dog imaginable and you can see what size your dog is (note, like us humans, even dogs of the same breed can be different sizes). Here are links: AKC and Jens Reviews