I paddle board a lot with my two dogs, and I wanted something to keep my smaller one warm on the water. The jacket worked so well, I have it for both of them. It's easy to put on, doesn't keep them too wet and works really well to keep them comfortable on the water. It's like a combination rashguard/windbreaker and it works so well for both of them. Plus, it's such a cute jacket, we get a lot of compliments on their little coats.