Alfie Pet Apparel by Petoga Couture - Joe Step-in Harness with Leash Set Best fit neck girth: 14" - 15", breast girth: 17" - 18". Leash is 47" in length and 0.5" wide. Sizing for each dog is unique. Similar to our clothing and accessory, medium size from one designer is not the same for another. For example our 9-pound yorkie model usually fits either one of three sizes (i.e. XS, S, M) depending on the designer. We highly recommend you measure your pet precisely with a flexible tape measure to ensure the best fit. Contact us if you have question. We are happy to help. Harnesses are comfortable alternative to collars for small pets as they evenly distribute restraint across the chest. The harness is designed to be gentle and put less stress on the pet when pulling on the lead. All joins are box stitched for extra strength and a quality finish. Perfect for everyday walk and weekend party, or just making your pet look its best. Alfie is a registered trademark and is exclusively distributed by Petoga Couture. Alfie trademark is protected by US Trademark Law. Use is strictly prohibited. Other seller offerings are counterfeits, they will not be identical to what is advertised here. Petoga Couture ship from US thru Amazon therefore all orders with them are eligible for FREE Super Saver Shipping and Prime Shipping Upgrade.