This nylon dog harness has 3/4 inch wide straps and fits dogs similar in size to a standard Cocker Spaniel. The chest strap adjusts from 17 inch to 29 inches. The neck strap adjusts from 12 inches to 18 inches. With neck and chest adjustments the Kwik Klip buckles allow harness to be fitted or removed quickly. These comfortable harness can grow with the dog.