I got burned from several online purchases because I was growing small so I ordered a size up for my 6 year old. I ordered M which is listed for 7-8 years. It fits well as it is thin and will not fall off. Glad it fits now and will hold up as my 6 year old grows. Material and workmanship are really good. It's reminiscent of some of the more expensive children's clothing brands. Got a matching sweatshirt from the same brand and both are really great. I didn't notice any shrinkage after washing. Both the sweatpants and hoodie are quite comfortable as a 6 year old refused to take them off after I asked to try on the sweatpants for sizing.
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