Hamilton Double Thick Nylon Deluxe Dog Collar Deluxe nylon dog collar made with Hamilton commitment to quality Made of the highest quality nylon webbing and color coordinated stitching Includes nickel tongue buckle and D-ring to allow for easy tie out and with an extra keeper dedicated to ID info Most Colors Available in sizes from 18 to 32-inch length When measuring pet's neck or chest to ensure proper and comfortable fit, add 2 inches.Size is measured from nylon tip to the outside edge of buckle. The length measurement includes the length of the buckle. When measuring pet's neck or chest to ensure proper and comfortable fit, add 2 inches.