These suits are a bit tight as they don't stretch. However, these are the only costumes I buy for my 12 year old. He is a tall boy and wears a size 18 so if your child is 1.60m tall you will definitely need a size 16 or 18. My sons are a little overweight so a size 18 is his. I have a feeling they run small but this is a very good quality suit.
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