Features:Portable and Lightweight: The tennis ball with string is small and lightweight, which makes it easy to carry and store. You do not need a tennis partners, and you can have tennis training at any time and anywhere.Precision-Training Tool: This self practice tennis ball with string is especially useful for improving tennis players' strokes actions, footwork, and hitting precision-control. It's a perfect tool for any level of tennis player to improve their game.Material: High quality tennis ball is wearable, lightweight and easy to carryWidely Application: Great teaching tool for beginners and intermediate tennis players to help to perfect skills of tennis, suitable for indoor and outdoor training and practice.Training Without Companion: Training anytime and anywhere when you want. Features everything a Tennis Player absolutely needs your Tennis Skills to the high level in no time.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Rope length: approx. 3.8 metresStretch: approx. 7 metres