Fill-n-Drill® Tennis Trainer
When filled with water, the non-skid base becomes heavier than any other Tennis Trainer on the market. Hit the ball and the rubber cord brings the ball back to you. Also good for practicing in your driveway, garage, or basement. Very light when empty, it can be stored in players’ bags and taken along. Elastic rubber cord winds around base and ball fits securely into base pocket. Great practice and teaching tool for beginners and intermediate players. Patents pending. Product weighs 2.6 lbs filled with water.