This ball is perfect for training and conditioning in various capacities. We have our field players use the ball to focus on wrist snap, doing repeated wrist passing to strengthen forearms for added power and snap in their shot. In addition, all of our players use these balls for our leg conditioning: once we are about 2 weeks into a season and have established base-conditioning with the regular ball, we substitute this Heavy Trainer and have players pass back and forth with two hands, carry the ball laterally, or work at 100% with the ball for 10 seconds on and 10 off. It's amazingly versatile and the balls last, seemingly, forever—we’ve never had to replace one and we use them consistently. We have 12 for our program and they are the primary go-to for our conditioning.