To provide a bat which can be sharply swung as the same holding feeling as that of a conventional bat.

A straight shape of the whole body of a bat is formed by using an elastic material 6 wherein a region to hit a ball 3 is filled with a lead, slag or a metal corresponding to the kind of the ball to form so as to have a weight the same as the total weight of the weight of the balance of a conventional bat and the weight for air resistance on the swing. The batting speed is made to be the same as the conventional one. And further the top end is formed light in weight and a stopper screw 5 for adjusting the weight. A grip 1 is formed by wood and the shaft 2 is filled with wood or wood dust to make an impact absorbed and to weaken the shock on hitting.