Product Description
We see it every day. Beginning players tighten and shorten their strokes to keep the ball in play. Unfortunately， this tight and short swing style sets them up to struggle with improvement. And， ability stagnation is one of the main reasons players quit playing tennis.
Everyone wants to improve! When players stop improving， they lose interest in playing. The innovative Oncourt Offcourt Whistler Vibration Dampener guides players to swing more relaxed， more fluid， and more smooth. It's a simple formula for success. Grip Light + Swing Right = Whistle!
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