| Adjustable Length | Recommended Dog Breed Sizes | |
| Small | 10" - 15" | Cavalier King Charles, Pekingese, Miniature Schnauzer, Pug, Scottish Terrier |
| Medium | 14" - 23" | Beagle, Border Collie, Boston Terrier, English Bulldog, French Bulldog |
| Large | 18" - 31" | Boxer, Dalmatian, Golden Retriever, Labrador Retriever, Weimaraner |