The professional brand of putting training equipment, “PuttOUT,” has begun full-scale sales of the overseas popular putting training tool, the “Devil Ball,” in Japan.Everyone knows that putting practice can be tedious and difficult to sustain. “Even when practicing putting at home, it’s hard to know what went wrong and how to improve.” I believe many people encounter these challenges when practicing putting at home.To address these practice dilemmas, PuttOUT has been providing putting training equipment that offers “high reproducibility and fun practice at home” for those struggling with putting and unable to improve.The Devil Ball focuses on improving the “grip…