I thought about buying a Carhartt winter jacket, but it was a lot cheaper and I'm glad I went for it. My son is 5 but he is very tall so I got 7 and he has room to grow but fits well. It's very light but warm. It's a bit chunky, but that could also be because it's a bit too big for him. He doesn't mind being bulky (which he usually does) and can walk and play in it with no problems.
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