I bought this for my child, but they only wore it once or twice and then it was stored. The size is XS, but it's an American size, so it's probably around a size M. It has a light blue base with a green, blue, and red check pattern. It might be a pattern you don't see very often. I think it can be worn by both boys and girls. Please understand that this is a used item that has been stored at home, and you are welcome to purchase it immediately. Color: Blue Pattern: Check Color Design: Regular Collar