This is a Waiwai Club gym uniform, often specified by kindergartens and nurseries. This is a short-sleeved 105cm size, with some pilling, light stains, and marks from a name tag on the left chest, but it's still wearable (see image 2). I am also selling many other gym clothes and sportswear. If you purchase a set of 2 items, I will deduct 100 yen from the total price.