DescriptionTraining tennis ball with elastic string. Put in water, sand or anything heavy into the trainer baseboard to make it heavy enough to hold the ball. Pull out the plug of the base, fill the hollow with water or sand to keep the base stay on the ground steadily. Save you from the bother of the limitation of site, play or practice any place as you like.Features- Color: Blue. - Material: PE. - Size: 23 x 15 x 8.5 cm. - Training tennis ball with elastic string. Put in water, sand or anything heavy into the trainer baseboard to make it heavy enough to hold the ball. - Do not need tennis partner, you may have tennis training at all time. - Especially to improve tennis players stroke action, footwork and hitting precision control. - Tie the ball to the base by rubber band, no need to pick up the balls frequently. - Pull out the plug of the base, fill the hollow with water or sand to keep the base stay on the ground steadily. - Save you from the bother of the limitation of site, play or practice any place as you like. - Fit for white collars, old people, youngsters, school, entertainment places, etc.
