I purchased the 4T black/yellow one for my son.  The one that arrived in the mail was 3T/4T black/yellow.  I am not sure why the choices for this product are so confusing, but I hope it fits my son.  It seems more durable than the thin one from WalMart.  It came with a hat, long jacket, and boot covers.  When he tries it on, I will update.  I just wanted to post what actually came with it and the size that arrived since it is a shot in the dark what you will actually get when you pick.