The Power Bag develops explosive hitting mechanics and encourages lower body torque and stability. By giving visual feedback, the Power Bag helps hitters see what leads to more power at the contact position. The power bag can be hit and driven through, the better the mechanics, the more the bag moves. Hitters will find that using proper hitting mechanics and actually driving through the bag with the hips leads to the bag going all the way to the top or even all the way around. This product is great because it allows the hitter to catalog their progress as they use it. It gives immediate feedback and lets the hitter learn what they need to do in order to hit the bag over. If used properly, this bag will increase forearm, core, and lower body strength which then, will translate in more power and more home runs for the hitter.