I purchased a set of four Next short-sleeved undershirts from this site, which had been pre-washed and used once. They are sized 3-6 months, which I believe is around size 70. The fabric is a bit thick. When I received them, there were already traces of name sticker removal on the tags. My child was a bit chubby, so they were only used for about a month and a half. There are some stains near the snap buttons, but I think they can still be worn. They might come out with an oxygen bleach soak. Are you interested if you need a lot of these? The long-sleeved ones were purchased from Nishimatsuya last year, but my child outgrew them after a few wears. They can be used separately and are convenient. There is some pilling, but they can still be worn. #Nishimatsuya #BabyClothes #Set #Stripes #60 #70 The design is suitable for both boys and girls. For reference, I had a boy. #Undershirts #NextBaby #70 #3Months #4Months #5Months #6Months Sleeve Length...Short Sleeve, Long Sleeve Type...Innerwear Sleeve Length...Long Sleeve Sleeve Length...Short Sleeve