The fit for this jacket is pretty odd. The sleeves are almost too tight for my 1 y/o however they're also way too long. The body of the coat is also pretty long so overall I think the proportions are pretty poorly balanced. There was one review here that mentioned the tightness of the sleeves and how this made rolling them up (b/c they're too long of course) impossible. I should have listened. Oh well as they say, you get what you pay for.
The coat seems warm enough and is a cute style but is definitely on the small side. I bought the 2T for my just 2 year old. The sleeves are really snug not much room for a sweater underneath. I kept it but probably shouldn't have. I ended up buying another roomier coat to layer underneath.