After water treatment, I wore it once for the Hatsumode ceremony (about 30 minutes outside), washed it, and stored it on a hanger in a dark place. The tag is still attached, and I've confirmed there are no stains, but please understand that it has been stored by a private individual. This is a romper-type item that quickly sold out online! I've outgrown it, so I hope someone else can wear it and find it cute (*^^*)! I plan to package it to prevent it from getting wet and ship it via Nekopos! Feel free to comment!