My son is 54 inches tall and weighs 60 pounds - slim and lanky. He usually wears a size 8 (sometimes 10 for longer sleeves). Size 7-8 was roomy - the sleeves are quite long. I was worried the lining would be too warm but as soon as my son put it on he said it was so soft and he loved it. Overall, the jacket feels pleasantly high-quality; The material doesn't feel as plasticky as other raincoats - let's see how it performs in the rain. So far we are happy with it.
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