ZippyPaws Adventure Life Jackets help keep dogs safe in or around water. Dense foam panels help dogs stay afloat and reflective stripes keep dogs visible on the water. Built in padded handles on the back of the jacket allow for easy assist back onto the boat or shore. Comes in 6 sizes: XX-Small: 6 - 10" in girth X-Small: 11 - 15" in girth Small: 16 - 20" in girth Medium: 21 - 27" in girth Large: 28 - 32" in girth X-Large: 33 - 40" in girth