Elevate your level of play on both sides of the field this season as you strengthen core muscle groups and reinforce proper mechanics with the Markwort(R) Power Punch Baseball Trainer. By utilizing resistance bands and applying them to the lead batting arm, fielding arm, or throwing arm, the Power Punch simultaneously creates strength-training exercises while promoting solid form to maximize your efforts on the diamond. Train With Purpose: Resistance-band helps increase strength in key areas while keeping your lead arm at an active angle Multi-purpose design allows to be used for hitting, fielding, or throwing-based drills Eliminates tendencies like "Bar Arm" and minimizes lazy fielding techniques Additional Details: Includes 45-minutes instructional DVD for hitting, pitching, fielding, and other techniques