This Product great one-person tennis trainer with 1 tennis balls with rope. ( First fill the sand or water inside bottle then use it. ) Tennis ball with rope is great for both kids and adults tennis training. ( Importent Note :- Racket or bat is not included in the package., High Quality and Durabl :- Khasala Tennis trainer is made of high-quality material, tennis ball is made of thickened rubber inner liner and elastic nylon rope, which can achieve effective rebound and durable, Easy to Carry :- The tennis training device is designed as a hollow structure kettle. After training, you can open the mouth of the bottle and pour out the water or sand inside. At the same time, a handle is added to the side to make carrying more convenient and comfortable., Practice Zone :- The tennis practice rebounder can be used for outdoor training, such as parks, tennis courts,back gardens. It will accompany you to spend a pleasant leisure time.