Size is 5 years. Made in the USA, so it's a style that fits the body snugly. A child of standard build wore it from around 3 years old. I don't see any stains or dirt, but it has a used feel as it's been worn and washed normally. Please consider this item if you understand it's a used item. The colorful fish print was a favorite. Color: Blue系 Sleeve Length: Short Sleeve Season: Summer Material: 100% Cotton