Worn for one season. The period of use was short because my child doesn't like underwear. The light blue underwear on the right side of the first image has a blue stain on the back, near the left shoulder, and a faint brown stain at the bottom. The dark blue underwear has a faint brown stain on the back. The light blue underwear has the child's name written on it, so I will either erase it or cut it off before shipping. How about these for spares? UNIQLO, Birthday, Nishimatsuya, BREEZE Shimamura, Boys, Underwear