This is a gauze sleeper I purchased on Rakuten. It's cute and has a Korean style. The size is listed as L, for ages 4-7. Width: 45 cm, Length: 80 cm. I bought it, but my child quickly refused to wear it, so I've only used each one once or twice. There doesn't seem to be any stains, but there might be some fading or fuzzing from washing. However, it's still in good condition and I think it can be used a lot. Because it's gauze, there may be some individual differences in size, but it doesn't seem to vary significantly. It has buttons on the shoulders, sides, and crotch, which is convenient!