FFMODE Pet Dog Preserver Life Vest Jacket Aquatic Swimming Water Safety Convenient top grab handle for easy resuce by hand or boat hook Front float assists in keeping dog's head above water For dogs weighing 3-40kg Secures snugly and tightly with adjustable straps Please understand that there is no standard sizing system for pet clothing. Please measure your pet and compare to the chart SHOWN IN THE IMAGE as each brand and style of pet clothing has its own sizing system.