PowerNet 2.8" Weighted Hitting Batting Progressive Training Balls (9 Pack)

BUILD PROPER TECHNIQUE; PowerNet's progressive weight system builds on technique development; Start with the light ball and increase weight and resistance to the heavy ball; The Weighted Training Balls make sure that you are building the proper follow through on your batting and throwing technique; Use for both batting and throwing technique development for the hardest hits and throws INSTANT FEEDBACK; Easily see how proper hits and mishits change the distance and trajectory of the ball; Correct form mid-drill HIGHLY DURABLE; Durable thick, pliable plastic cover is designed for years of hard hits and throws BUILD POWER; Develop muscle groups specific to batter and pitcher movements; Strengthen your swings and throws; Build power while warming up, dual-purpose workout USED & ENDORSED BY PRO PLAYERS; Jose Martinez, Luis Valbuena, Kirsti Merritt, Kelly Kretschman