This is baby underwear from PETIT BATEAU. The size is 81cm. It runs a bit small, so I think it's suitable for babies under 1 year old. My child wore them around the age of 1. I've included a size chart from the official website, so please take a look. I received these after giving birth, but my child outgrew them before wearing them much, and they've been stored at home. The underwear with the large heart in the middle was worn about 5 or 6 times and has a slight stain on the neckline (see photo 4), but it's not very noticeable. The items on either side were worn about twice and have no stains or damage. They haven't been worn much and are still in good condition, so I'm offering them for sale. They're cute underwear that look great in photos. Please consider purchasing them.