I think the size is around 4T, but I'm not sure because there's no tag. It's roughly 100-110cm. For those who don't mind minor details. It's a beautiful light blue polo shirt. It's elegant, cute, and a cool color. It's stylish. The color looks darker in the fifth picture, but the actual color is the beautiful color of the first picture. In the fifth picture, there's a small, inconspicuous mark like a pencil mark inside the circle. Suitable for formal occasions. There's no color fading, but since it's cotton, there's some wear and tear, so please don't mind. There's no pilling, so I think it can still be worn beautifully. 100% cotton. Blue. A discreet pony on the chest. It's a small, not too big, very stylish pony, so I recommend it! My son looked very cute wearing this.