Koguchi Shirt Momo-hiki (Japanese work pants) My child wore these at a summer festival when they were in the fourth and fifth grades of elementary school. I received the Koguchi shirt from someone else. When I bought it, there was a faint stain around the chest area, but it wasn't very noticeable, and I didn't mind it. Sizes: Momo-hiki: Size 3, for ages 5-6 Koguchi shirt: Marked as for ages 5-6 Colors: Both are navy blue. I chose navy blue because I thought black would feel too heavy for a hot summer festival. Home-cleaned. These are items that my child wore. The shirt has some slight stains. Please refrain from purchasing if you are at all concerned.