36 Indoor Outdoor Golf Practise Balls12 x Foam BallsFoam balls simulate the flight of a real golf balls without this risk of damaging windows furniture etc. Great for use in the office home or graden! These balls are the same size as real golf balls.24 x Plastic Airflow BallsThe balls are designed to create huge drag to limit the distance the ball travels allowing you to use your full swing indoors or in your garden. These balls are the same size as real golf balls.