My daughter usually wears medium and medium sized children's clothes. I read the reviews and saw that they are on the skinny side and long so I ordered a few sizes up. The waist fits her but as others have said it was about a foot too long. If your child is very skinny/skunky this is for him. My daughter said they kept her dry and warm during the 40 minutes we spent in the snow. But she wasn't particularly active. She mostly knelt down and made snow angels.
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