IPENNY Volleyball Spike Training System, Adjustable Volleyball Hitting Trainer with Ball Holder, Volleyball Practice Equipment for Serving, Jumping and Spiking, Fits Volleyball & Basketball Hoop

["Height Adjustable Design - Freely adjust the hanging height to fit all ages, skill levels and training needs, perfect for beginners, teens and adult volleyball players to practice jumping and spiking at will.","Easy Quick Installation - No complex tools required, simply hang the trainer on volleyball/basketball hoops, poles or any sturdy stand, finish setup in 1 minute and start training immediately.","Sturdy Construction - Made of high-quality wear-resistant strap, anti-break and anti-slip, can firmly fix the volleyball and withstand repeated hitting and pulling.","All-Round Volleyball Training - Ideal for practicing spiking, serving, jumping, arm swing and hand positioning, effectively improve your volleyball skills and athletic performance with daily training.","Portable & Space-Saving - Lightweight and foldable design, easy to carry in a sports bag for indoor/outdoor use, no need for extra space, suitable for home, gym, court and backyard training."]