I almost sent it back as it seemed too small. However, when my son put it on, it stretched a lot and fit perfectly. Glad we tried it on before returning it. He is a very skinny 8 year old, he only weighs about 42 pounds and is 52 inches tall all legs only. He usually wears a size 5 in short sleeve tops so I would say it fits as expected. I ordered him size 4.
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