Golf Training Balls,Awakingdemi Airflow Hollow Golf Ball Practice Training Sports Balls Golf Accessories 50-PIECE---packed of 50 lightweight practise golf balls of diameter of 4.00 cm. LIGHTWEIGHT AND PERFECT FOR LITTLE HANDs---the practice golf balls are made of plastic,and lightweight for far more distance; EASY TO FIND--The bright yellow is nice and easy to find in the yard or in snow. GREAT FOR -- those golf balls are suited for beginners who are wanting to learn to play golf. They are not very hard & if hit hard enough or stepped on they will break & be pushed in. SUITABLE SPORT--golf or tennis practicing.