Improve your jumping, hitting and speed, force, foot work and ball contact technique without without the need of another person. Playing and training wherever possible, practice repeatedly and improve your level. Features: A great trainer to improve your jumping, arm speed and spiking power. Playing and training without the need of another person, practice repeatedly and improve your level. Made from high density nylon and neoprene material, strong and durable. Simple operation, wrap the volleyball and hang it on bracket to train. Come with a durable carabiner which is easy to clip and replace. The height can be adjusted with the buckle on nylon strap. Specifications: Material: Neoprene Color: Black Product Size: 34.6 * 4.6 cm / 13.6 * 1.8 in Package Size: 36 * 5 * 5 cm / 14.2 * 2.0 * 2.0 in Package Weight: 132 g / 4.7 oz Package List: 1 * Training Strap