MASTER is the COMFORTABLE ball for a FUN game or for individual practice i.e. service exercise or improve a specific shot. Also, when you are just starting out, you need a durable and easy-to-play ball to find out what the game is about. The HEAD MASTER ball is perfect for a quick fun game with a friend whether you are on a hard or a clay court. The new, more sustainable packaging uses less plastic and is easier to recycle.