Petmate ASPEN PET PRODUCTS 20808 Nylon Adjustable Collar, 16 to 26-Inch, Blue Petmates Basic Nylon Collars were created with high quality, long lasting nylon Choose an adjustable collar for a custom fit on your dog, or room to grow for your puppy Our basic Nylon Dog Collars feature fray resistant poly nylon in a variety of stylish colors In addition, this durable collar is comfortable for your pet & features tough plastic Delrin buckles with built-in adjustment slides, heavy duty stitching & metal d-rings for years of dependable use Tensile strength is 7x the weight of the dog