Description: 【Easy Tennis Learning】: This convenient single training tennis trainer allows you to learn and practice tennis with ease. Simply attach the corded tennis ball to the base and start your training. Tennis Trainer Rebound Ball Set is also a great gift for families and friends on birthdays, holidays festivals, etc. 【Material】: Made from HDPE material, rubber, and , this tennis trainer is environmentally friendly, highly durable, and safe to use. 【Stable & Secure】: The octagonal base features a rotating cap that can be filled with water or fine sand for anti slip purposes. This ensures stability during your training sessions and effectively prevents the trainer from moving. 【Ideal Angle for Training】: For optimal results, hit the ball at a 45° angle upwards while running to it. This enhances your agility and reflexes during practice. Whether practicing at home, on the court, or in the backyard, this compactly designed set is portable enough for you to carry around for training whenever you want. 【Product Specifications】: The package includes 1 tennis ball attached with a black rubber band and 1 tennis trainer, measuring 20cmx14cmx5.5cm/7.87inchx5.51inchx2.17inch in size, great for carrying around or storing away when not in use. Size Chart: 20cmx14cmx5.5cm/7.87inchx5.51inchx2.17inch Package Includes: 1 Tennis Trainer  1 Rope 1 Ball Note: Please allow slightly errors due to manual measurement and different monitors.