Blueberry Pet Soft & Comfortable Summer Hope 3M Reflective Neoprene Padded Dog Collar, 4 Colors, Matching Harness Available Separately Neck 18"-21.5", Entire webbing width 1 1/5", Ribbon on neoprene layer width 1"; 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 harness (B010NN8LHM) sold separately To keep the style and high quality, our designer delicately embedded part of the neoprene collar with 3M reflective materials. The metal O ring is matt grey 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 to make a safe and fit purchase. Always look at the size chart for the recommended weight range to confirm the size.