This 3-piece set is very cute. Size is 66 (the size tag is in the last photo). There is a feeling of wear and some pilling (I don't think it increased) from the time I purchased it from the previous seller. The previous seller said their child could wear it until they were 10 months old. I wore it about 3 times between 2 and 4 months old. It was very cute. At 4 months old (slightly above the growth curve), it still had a roomy fit, so I thought it was about Japanese size 70. Thank you. Korean baby clothes Bonnet Hat Boy