I only tried them on indoors. I'm selling them because the size didn't fit. They are 21cm, but they are a wide type, so they are a bit large. -------------------------------------------------- The "FURON V6+ DISPATCH HG" junior model is colored in a passionate orange that expresses the burning inner fighting spirit. It features junior-specific specifications such as a wide last for junior players with extra room in the toe area and an independent tongue structure for easy fit adjustment, and is made with a durable synthetic leather upper. It comfortably supports children's play from matches to practice. Brand: New Balance Color: orange/blue Size: 21cm (※Slightly larger) Model: FURON V6+ DISPATCH HG Sole Type: FG (Firm Ground)