Fashionable Patterns and Designs: Hamilton dog collars are designed with unique, bright printed patterns layered on top of bold colored nylon webbing; They pop against your pup’s coat to look stylish, adorable, and elegant for your day together Durable Nylon Dog Collar: Made with the highest quality materials, our hand-selected webbing, thread, and hardware ensure a long, dependable life; Unique O-ring placement uses the strength of the webbing to make our pet collars 4X stronger than others Adjustable Dog Collar: Our adjustable collars are available in two sizes based on neck circumference measurements for a perfect fit; You should be able to place two fingers between your pet’s neck and the collar to ensure a comfortable fit Size Measurements: Small/Medium Dog Collar, 5/8-inch wide, adjustable length 12-18 inches; Medium/Large Dog Collar, 1-inch wide, adjustable length 18-26 inches; Suitable for small, medium, and large dogs Quality, Comfort & Safety Since 1973: Hamilton has been a leader in pet & large animal products for over 50 years; We provide quality products that are durable and stylish; Hamilton has an option to suit any animal owner's needs