PackageThe package comes with 2 elastic cords, 2 ball retainers which can hold the ball securely in place A Must Have to Improve Your Training Skills: With our volleyball spike training equipment, you can easily improve your wicked-fast arm speed and spiking power, without ever chasing a ball, no need the help of another Easy To UseEquipped with 2 elastic cords and 2 ball retainers of velcro which can hold the ball securely in place, you can tie it to the post or tie it between two trees in your back yard easily. The adjustable elastic cord can be adjusted to the length and height you want High Quality Material: The volleyball training equipment is made of lightweight and durable nylon. Firmly hold the ball in place and no worry about breaking while practicing. Fit for solo and team, easy to carry Versatile: Our volleyball equipment training is suitable for indoor and beach volleyball. It can even fit basketballs, football, makes it possible to practice things like serves that you wouldn't normally be able to do alone Warm Tips: Due to the elasticity of our volleyball spike trainer, the volleyball will vibrate back and forth when spiking, you can hold the ball before spiking it.