SKLZ Power Sleeve - Portable Golf Club Weighting System: * Use on your own clubs, allows for hitting balls * Ideal for warmup or staying in shape during the off-season * Increases shot distance and golf muscle strength and flexibility * Ingrains the feel of the correct swing path and improved ball contact * Hit with it on your club to reveal and correct swing flaws * Used by leading professionals on Tour * Easy on and off, won"t scratch your shafts * Instructional video at www.sklz.com