Elasti-Stroke 25 inch Tennis Racquet Set is a great tennis training aid that improves tennis skills with a self rebounding ball. The set includes a 65 mm stage 2 and new 75 mm stage 3 low compression transition balls. The tennis racquet features shock reducing foam handle. The Elasti-Stroke 25 inch Tennis Racquet Set also includes a DVD with games and drills and extra ball attachment discs. With the Elasti-Stroke 25 inch Tennis Racquet Set there are no balls to chase and no courts needed. It can be played anywhere.