This is a swimsuit specifically for Seika Swimming School. It was used for one year. I am selling it because my child has outgrown it. The bottom has some wear, but I don't think it's see-through. The name section has been blacked out. This is a size L, but my daughter, who is a 4th grader and 140cm tall, wore it. For reference. I will have it on sale until December 22nd. Thank you.