Our vertical bounce tester is made of high-quality materials and designed with precise product parameters to accuracy and reliable performance. Perfect for those who want to improve their performance on the court. Features Suitable for coaches training athletes in any sport. Suitable for athletes to train vertical jump. The tester can be reset quickly and easily. The blades are made of ABS and will not hurt your hands. With pulleys on the bottom it can be easily moved by one person. Suitable for any scene. Specification Product Name: Vertical Jump Trainer Size: 1.4-2.8 meters/4.6-9.2 feet 1.4-3 meters/4.6-9.8 feet 1.7-3.2 meters/5.6-10.5 feet 1.7-3.6 meters/5.6-11.8 feet Product material: Stainless steel ABS Applicable people: Children teenagers adults Notice 1. Due to different manual measurement methods the error is 1-2 cm. 2. We try our best to make the pictures as close to reality as possible but light contrast and color display may cause color differences. Our service: If you have any questions about our products please feel free to contact us we will reply to you within 24 hours.