This is a set of rash guard and swimsuit. The size is listed as 3T, so it should fit children around 3 years old. I used it when my child was 2 and a half years old, and the sleeves were a little long. I'm selling it because my child has outgrown it. There are small stains on the sleeve ends and the edges of the pants. This is a used item, so please understand before purchasing.