I bought a size 12/14 for an average height (5ft 1in) and weight (80lbs) almost 13 year old and they fit just perfect. The belt helps to hold the pants extra. very long for him, so hopefully he can use it for something. He used them for camping. Once it was out for about 4 hours and it didn't freeze at all. He said they protect against the cold. He could move easily to sit, stand, roll... He's worn them four or five times now and they're still holding up well.
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