Waist size is for boys, 51 to 57 cm. The Fila embroidery is on the left leg and is colorful, making it stand out and look cute, especially by the poolside. It had a drawstring, but the child didn't like it, so I removed it and lost it. It's without the drawstring, but the elastic around the waist is secure, so it stayed on without slipping. If anyone is concerned, you can put your own drawstring through it.