Reflective and stylish! The fun theme of our exclusive Casual Canine Bad to the Bone Collars lets dogs show their true colors. Reflective screen-printed design combines fashion and safety. Comfortable, padded nylon is easy to wear. Adjustable Collars have quick-release plastic buckles, and include a special "Bad to the Bone" Charm. To determine the proper size, measure the circumference of pet’s neck and add 2". * 3/8" – 5/8" width is best for puppies and small dogs * 1/2" – 3/4" width is best for small to medium dogs * 3/4" – 1" width is best for large dogs Description Adjusts to Fit Necks 3/8"W Collar 6" –10" 5/8"W Collar 10" –16" or 14"-20" 1"W Collar 18" –26"