Just got L so can't comment on specs yet but have many questions about sizing hope this helps. Model L fit my skinny 9 year old daughter (23.5" waist, 15" hips) and her 7 year old brother (25" waist, 15" hips) well. Daughter said that the waist is a little loose. Seemingly perfect for a boy (which of course means he'll outgrow it in a few months, arg). Will probably buy an XL and hope it fits him and he fills it later. If your child is a little taller than mine or at risk of shrinking (I think I'll find out later) you might want to consider an XL and let them grow in it.
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