This is a 4-piece set including a dress, hat, bib, and socks. It was worn a few times for hospital discharge and the Oshichiya (7th-day celebration). The size is 50. The glossy outer fabric and lace are very lovely. The lining that touches the baby's skin is 100% cotton. I don't think there are any stains, but as it was worn by a baby, please refrain from purchasing if you are looking for a perfect item.