Swing Sleeve - Tennis Racquet Resistance Training Sleeve Provides resistance during all tennis strokes Develop strength and racquet speed Great for warmups or strength and conditioning Fits most standard player racquets (also available for over-sized racquets) Use alone or with the Swing Max or Swing Band to modify resistance levels Provides resistance during all tennis strokes Develop strength and racquet speed Great for warmups or strength and conditioning Fits most standard player racquets (also available for over-sized racquets) Use alone or with the Swing Max or Swing Band to modify resistance levels