This is a romper undershirt from Akachan Honpo, purchased in May 2025. It was included in a newborn undershirt set that I bought new, but I never had the opportunity to use the romper undershirt, so it's unused. It's made of mesh fabric, so I think it can be worn coolly even when layering clothes. Also, because it's sleeveless, the sleeves won't stick out from the clothes, making it look neat. *There were frays at the ends of the strings on all 4 pieces from the time of purchase (see photo 7).* *There are fold wrinkles.* Please consider it!