Coastal Pet 06301 A BLU12 Adjustable Dog Collar, 3/8-Inch, Blue 3/8", Blue, Adjustable Nylon Collar, 8"-12" Best suited for medium or average size dogs Made from high quality nylon that is specially processed to prevent fraying, and increase the overall strength All nylon products are carefully and neatly finished This collar is comfortable, appealing, and durable