Description nylon materials, this training aid is built to last. Its durable construction that it can withstand even the most intense training session, making it a reliable choice for athletes of all levels. Whether you're a seasoned pro or just beginner, this training aid is sure to help you improve your skills and reach your full potential. Features -Color:As Shown -Material:Nylon -Size:67.00X3.50X3.50cm/26.33X1.38X1.38in - Adoption of stable nylon material, durable and safe to use, which has a long using time. - The volleyball spike trainer is in a simple design, but it is very useful and practical. - Our volleyball spike trainer is easy to adjust, you can adjust the cord according to your height. - With our volleyball spike training equipment you can easily improve your jumping, hitting speeds and force, arm swing technique, etc. - It is designed to bounce randomly, so volleyball players can their hand-eye coordination, improves reflexes, and generates quick reactions. Adoption of stable nylon material, durable and safe to use, which has a long using time. The volleyball spike trainer is in a simple design, but it is very useful and practical. Our volleyball spike trainer is easy to adjust, you can adjust the cord according to your height. With our volleyball spike training equipment you can easily improve your jumping, hitting speeds and force, arm swing technique, etc. It is designed to bounce randomly, so volleyball players can their hand-eye coordination, improves reflexes, and generates quick reactions.