Alfie Pet by Petoga Couture - Aster Quick-Handle Harness Vest with Microfiber Fast-Dry Towel Medium size best fit neck girth: 25.5", breast girth: 24.5" - 31". 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. Harness vests are comfortable alternative to collars for small pets as they evenly distribute restraint across the chest. Our harnesses are designed to be gentle and put less stress on the pet when pulled. Offer two-way control with leash or built-in easy-to-grab handle on top for total control of the dog in any situation. Made of breathable nylon with neoprene inner lining reduces abrasion and better comfort especially in warmer weather. Fast drying after water activities. Adjustable straps and all joints are box stitched for extra strength and a quality finish. Machine washable and weather resistant materials make this harness low maintenance and very practical in all life situations. Alfie Microfiber Fast-Dry Pet Drying Towel is made of a specially designed, ultra-tightly woven material, known for its excellent absorption and ultra-fast drying speed. Measures 28 x 18 - hand towel size. Absorb up to eight times its own weight in water, quickly allowing you to dry your pet much faster than traditional cotton towels.