Size XL which was like 6-7? Daughter wore them from age 5-8. There were times she didn’t take them off for like a week 🙈 these were *the* pants for a very long time. Pants length is prob a size 5, but they really just got short, she never wore them too tight. Double layered, thicker than playwoolies but thinner than longies, comparable but slightly thicker than double layer section of trackers for sloomb comparison. A couple pulls, nothing super obvious but these were worn and loved.