These are standard student uniform pants (used in junior high school). For winter. I have the same ones, but I'm selling one that I didn't use. They can be washed at home. I washed them normally and they dried quickly. They are Kanko brand, which specializes in school uniforms, so the quality is good and they don't lose their shape, making them very useful. They are warm and high-quality because they have a lot of wool. I prefer items with less synthetic fiber, so these have a lot of natural wool. Black Size 76 Polyester 100% Please understand that these are used and stored at home. Please refrain from purchasing if you are sensitive to such things.