Serve trainer works efficiently to help you gain strength and feel the right technique, such as serving overhand or underhand, setting and spiking in the shortest time by YOURSELF! Thanks to Serve trainer, you can practice without a partner or waste your time chasing the ball With Serve trainer you can now learn how to serve like a pro with ease. Our smart design ball rebounder will help you spend more time HITTING the ball by eliminating the need to chasing it after every serve you make. You can use this serving trainer equipment to improve your swing motion technique or just to fast warm up your serving moves before a volleyball game! DESIGNED FOR EVERYONE Our volleyball training aids is designed for all experience levels from beginners to experts No matter what age, our Training aid has an elastic cord which can be increase up to 78 INCHES for hitting application or 40 INCHES for more isolated technique. With a wide of 0.78 INCHES you can now practice without worrying about your training equipment breaking! Practice like you've never won, Perform like you've never lost Our volleyball training equipment is made of Premium strong adjustable elastic cord adopting premium diving cloth, buckle and Velcro, which ensures its durability and Elasticity. OUR GUARANTEE Customer satisfaction is very important to us. That's why we recommend innovative products we can find to ensure that you are always satisfied when shopping from us. If for any reason you are not satisfied with us, please write to our email address or call us . We will do everything we can until you are 100% satisfied with us Buying products online can be daunting for you, but considering we're living in the 21st century, that's just normal. AN AMAZING CAUSE We are proud to support the The Children's Defense Fund (CDF), which has always helped children. Note: Delivery of Promotional Items may take 10-14 working days due to the high number of orders.