The Dribble Up Smart Soccer Ball Size 4 is a high-quality, app-enabled training ball designed for youth players. Made of durable composite leather with machine-stitched seams, this yellow ball is suitable for indoor training sessions. With features like high visibility and being association-approved by Dribble Up, this soccer ball is perfect for young athletes looking to improve their dribbling skills. The smart technology built into the ball allows for interactive training experiences, making it a great tool for soccer teams and enthusiasts alike.