About this item Adjustable Fit: Medium fits 20"-29.5" chest girth - comes in 4/5" width, sternum strap length 8". 4 Ft length leash. Leave enough room for a couple fingers under the harness. Once you fasten your dog's harness, you should be able to easily slide two fingers under it. No More Pulling: This no-pull harness puts you in control on walks with your dog and eliminates potential strain on your pet's neck that can come with standard collars. Perfect choice for daily walks. Great Color Selection: We understand we all are unique, so is our pooch, with that philosophy in mind we created this Dog Harness and Leash Set with a large selection of colors available in both sizes, your pet will feel stylish & debonair while sporting those patterns. Safety & Durable Material: Made of high-quality polyester. Soft, comfortable and no harm to pet's neck and chest. Sturdy plastic buckle closure and two heavy duty D-rings for added security, quick release; step-in design harness design make it easy put on/take off. WORRY-FREE PURCHASE: Whether you accidentally purchase the wrong size or your dog mistakes his harness for a chew toy, please contact us at your free time, our Customer Service are happy to assist with replacements or resizing.