Description It's the perfect portable tennis training aid. Unwrap the cord and hit the ball as hard as you'd like. The harder you hit the ball, the faster it will back to you. The base is thicker and the plastic is a new material, the new material is odorless, thick, wear-resistant and super practical. Fine design, it has a rugged, non-slip rubber base, so needn't a ball machine or wall. It is lightweight and portable that can set up anywhere and stores easily. Features - Color: Orange - Material: PE - Size: 20 x 7cm - The base is thicker than others and the plastic is a new material. The new material is odorless, thick, wear-resistant and super practical. - Fine design, it has a rugged, non-slip rubber base, so needn't a ball machine or wall. It is lightweight and portable that can set up anywhere and stores easily. - It's the perfect portable tennis training aid. Unwrap the cord and hit the ball as hard as you'd like. The harder you hit the ball, the faster it will bound back to you. It's a great teaching tool for beginners and single person practice. - Build quickness, hand-eye coordination, and stamina. To shorten the time, you can also wrap some of the cord around the base. Package list: 1 x tennis trainer set