Blueberry Pet Soft & Comfortable Urban Chic Diamond Pattern Neoprene Padded Dog Harness, 2 Colors, Matching Collar Available Separately Chest Girth 19.5-25.5", Chest Strap 6", Width 3/4"; The chest strap is not adjustable. For a safe and fit purchase, be sure to check the neck and chest; A properly fitting collar and harness won't leave any room for your dog to chew. The harness does not stretch itself. NEVER leave your dog unattended with a harness on. The grey buckles are made of eco-friendly plastic. Made of high density polyester webbing with a comfy neoprene bottom layer. 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. This harness is a single product. Its matching collar (B00ZEMMNZE) sold separately All pictures are taken with our production samples from a size 3/4"(wide) * 19.5-25.5"(chest).