Please let us know how it fits! We live on the water and go out on the boat every day. Mack can swim but I am so afraid that he might jump or fall in and if we are in the ocean the surf can be rough. We bought him a life jacket and its too bulky. I have tried several different brands. I wish I could sew, I would make one homemade. I dont want him to have to stay inside while we are out on the boat this summer. He loves being the skipper