Nishimatsuya's pre-alls are all 100% cotton. Sizes are ① and ④ are 50-60cm, ② and ③ are 60-70cm. I wore them a few times during the first two months after birth. There are no leaks or stains related to bodily waste, but the fabric shows some signs of wear. Please proceed with purchase only if you are not concerned about this. I bought all of them for about 4,000 yen.