Description: 【Innovative Design for Solo Practice】: This tennis trainer features a heart shaped, no water fill base with an attached rebound ball, allowing you to practice solo without the need for a partner. The rebound design ensures continuous play, making it great for honing your skills 【Enhanced Stability and Balance】: The base is 30% heavier due to its iron sand core, providing exceptional stability during practice sessions. Its balanced weight distribution prevents sliding and ensures the trainer remains firmly in place, offering a great training experience 【Portable and User Friendly】: Equipped with a non slip bottom and convenient carry handle, this tennis trainer is easy to transport wherever you go. Its compact size (10 cmx8 cmx5 cm/3.94 inchx3.15 inchx1.97 inch) makes it ideal for use in parks, tennis courts, backyards, or any open space where you can enjoy uninterrupted practice 【Ideal Training Angle】: Designed to improve agility and reaction time, this Tennis Practice Device Base helps enhance your performance by simulating real game scenarios. Whether you're a beginner or an experienced player looking to refine your skills, this trainer provides the great angle for effective training 【Material】: Made of plastic and iron sand materials that withstand repeated impact from powerful hits, this Tennis Training Rebound Ball offers durability and reliability over time, you can enhance your hitting skills, improve your body coordination ability and elevate your overall tennis level Specification: Material: Plastic, Iron Sand Size Chart: Tennis Trainer 10cmx8cmx5cm/3.94inchx3.15inchx1.97inch Package Includes: 1 Tennis Trainer  1 Ball with Rope Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.