Elastic Resistance Feedback, Strengthening Upper Body Resistance bands provide continuous elastic resistance to help players feel the correct trajectory of the force when serving and swinging the arm to pass the ball, correcting the wrong movements and improving the strength of the shoulder and arm muscles. The resistance is adjustable to meet the needs of different training stages, from beginners to professional players can use. Multi-functional training to enhance the comprehensiveness of skills Serve training: through the resistance band to simulate the serve action, enhance the speed and power of the arm swing, improve the accuracy of the serve. Swinging arm passing training: Strengthen the stability and control of the arm when passing the ball to improve the quality of the pass. Agility training: Combine with the resistance band to perform foot movement, turn and other actions to improve body coordination and reaction speed. PORTABLE AND EASY TO INSTALL, TRAIN ANYTIME, ANYWHERE Resistance bands are lightweight and easy to carry, equipped with a storage bag, suitable for a variety of scenarios, such as home, ballpark, park and so on. Easy to install, no need for complicated tools, can be fixed in the bracket, door frame or tied to the waist, one person can operate. Durable Material, Safe and Reliable The resistance band is made of high elasticity latex or TPE material, which is wear-resistant and tear-resistant, adapting to high-intensity training. With Velcro design, it can be fixed firmly and not easy to fall off to ensure the safety of training. Suitable for all ages, all stages Adjustable length and resistance, suitable for youth and adults of all ages. From basic strength training to advanced skill enhancement, you can adjust the training intensity according to your needs.