I bought 2 of these for my two dogs, both in the XL size. One of my dogs is a tall female 60 lb pointer mix and the other is a shorter male 55 lb german shepherd mix. The female has a more slim frame while our male dog is a little huskier with a bigger torse and lil legs. The XL sixe works on both of them.The same size fit perfectly for both. The top part is a waterproof coat with a very thick, soft and warm underneath. The stomach straps are perfect because you can adjust the tightness overall and where the straps sit (Coats have been an issue in the past because sometimes the straps are too far down the stomach and our male dog ends up peeing on them). The leg elastics in the back are also great to make sure the coat stays on.We like to use these alone when it's not too cold or just raining and double layer with sweaters underneath. Regardless of the layers and the harnesses we use for walkies, these always fit over top because of how adjustable they are.The colors are also very bright and we've gotten a lot of compliments and giggles from our neighbors and friends. Saw a review before I bought that the red can look a little like a very bright pink and that is true! We got red and pink and so they compliment eachother.Definitely recommend these for anyone who lives in cold, snowy, and/or wet areas! We live in the suburbs of Chicago and have found that these are effectively water resistant and warm through the fall and winter season (so far). :)