100% nylon New Uses: You may be confused about how birdies apply to baseball hitting drills. In fact, many professional hot birdies come to warm up. This is a fun, efficient and economical drill that is especially suitable for indoor practice Improve batting timing accuracy: You can simulate different pitching trajectories and speeds, practice different speeds and actions, and improve timing ability Improves Hand-Eye Coordination: Since the birdie's cork base is small, your players should focus on the birdie's trajectory and hit the ball in the sweet spot, which will help improve their hand-eye coordination Ease of use: Whether you are a professional coach or an excellent putter, our shuttlecocks make it easy for you to throw. You can play batting indoors without worrying about damaging your house Our nylon shuttlecocks can also be used for amateur badminton training and outdoor recreation. [Pack of 24] Great deal