Patent attributes
A variable inertia bat weight training aid having a sleeve with radially divided, elongate pockets in which are permanently captured a plurality of weights. One end of the sleeve has a diameter sufficient to receive the barrel of a baseball bat but the other end of the sleeve includes a restricting band having a diameter sufficient to receive the handle of the bat but insufficient to pass over the barrel of the bat. Each weight within an associate pocket may be adjustably positioned along the length of the sleeve and secured in place by a restraining strap in order to vary the inertial resistance of the baseball bat and the perceived weight a batter experiences for warm-up and strength training exercises.