Our medium dog collars are adjustable from 14 to 20 inches and come in two widths! Regular is 3/4" and Wide is 1"! This makes for great fit! So many colorful unique designs with lots of personality just like your dog! Made of 100% dye-sublimated durable polyester, colorfast, and machine washable. Design is printed with a special heat transfer process onto a heavy braid - it is not ribbon or fabric sewn onto webbing that can easily fray. Adjustable with a heavy duty clip and metal ring to attach a leash and tags. Made in the USA.