SwingRocket Racquet AcceleratedPrimed Muscles = Better TennisHit the courts with better groundstrokes after priming your muscles with SwingRocket.Create a faster and more powerful tennis swing and racquet head speed in just minutes a day! The SwingRocket is designed to increase strength and flexibility in the tennis specific muscles. It will add more power in your ground strokes, greater control to your shots, confidence to your game, and will win more matches.SwingRocket is a soft weighted Flexi-bar (8 oz.) that easily straps over the end of a tennis racquet used for warming before a tennis game. Shawdow swinging with SwingRocket nearly doubling weight of your racquet, after removing it; you will be able to swing the racquet faster. This process is known as deceleration training. For years pro baseball players and golfers have been using weighted doughnuts or swing weights to warm-up and increase their swing speed. SwingRocket now offers the same proven concept for tennis players to have a more effective shadow swing drills.Racquet Head SpeedIf you want to increase your racquet head speed, the SwingRocket is just for you. Top pro players swing with the SwingRocket every day both on and off-court. They have seen significant results in a short time as they train with SwingRocket to develop greater racquet head speed. 1- Minute Pre-game Warm-up SwingRocket has become the preferred pre-game warm-up by top pros over plain shadow swinging. In just 1 minute it primes tennis specific muscles used in ground strokes and serve shots. SwingRocket weights will help you develop a better kick serve by:1- A relaxed rhythm and fluid wind-up motion2- Stretching and strengthening the external shoulder rotation3- Maximizing and extending the key "back racquet drop aka back scratch " - the starting point of racquet speed.4- A fluid arm motion to contact - extension of the elbow and the rotation of the hand and arm.