Neck 14.5'-20', Entire webbing width 1', Ribbon on neoprene layer width 3/4', Size Medium; The collar does not stretch itself, please make sure leave ONLY 2 fingers between collar and dog neck. A properly fitting collar and harness won't leave any room for your dog to chew. The collar is not for tie out. NEVER leave your dog unattended with a collar on. This collar is a single product. Its matching leash (B01EFMRSEE) /harness (B01LWN631A) /bed (B012MZ7PYY) sold separately Made of high density polyester webbing with a comfy neoprene bottom layer; The grey buckles are made of eco-friendly plastic. The metal D ring is chrome coated to add durability. The loop tied to the logo is specifically designed for the purpose of attaching dog charms, tags, pendants or accessories. Please do not attach any dog leash with this loop. All pictures are taken with our production samples from a size of Medium; Please measure your pets carefully for making the right purchase. Always look at the size chart for the recommended weight range to confirm the size.