Feature:_x000D_GREAT FOR SOLO TRAINING: With the aid it becomes very easy to practice arm swing technique and tosses multiple times in a row. The elastic cord guides the ball back after every swing. No need for interrupting the training in order to fetch the ball. Multiple fast repetitions in a row get you in a state of flow: this makes it easy to perfect technique through quick feedback._x000D__x000D_ADJUSTABLE CORD LENGTH: Elastic double reinforced cord is adjustable in length. For optimal serve training we recommend finding the optimal height for your height and adjust the cord accordingly. It can be adjusted up to 5' 9'' (1.8m)._x000D__x000D_COMFORTABLE AND SIZE ADJUSTABLE AROUND WAIST: Velcro strap fits comfortably around waist. It can be adjusted to accommodate different waist sizes up to 2'6'' (80cm)._x000D__x000D_FITS ANY VOLLEYBALL: Neoprene pouch with adjustable length holds standard volleyball or beach volleyball. It could even hold soccer, water polo or basketballs. This pouch is attached to an elastic cord that is attached to the velcro waist strap._x000D__x000D_Package Content:_x000D_1pcs Soccer/Volleyball Kick Trainer_x000D__x000D_Note:_x000D_Transition: 1cm=10mm=0.39inch_x000D_Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid._x000D_Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you