Thank you for viewing! This is a set sale of Driveline's Plyo Ball 1000g and J-Bands: JBANDS, which are considered the mainstream of pitcher training in recent years. [Product Name] Driveline Baseball Plyo Ball [Condition] It has been used for practice, so there is a feeling of use, but since it has been used infrequently, the weight of the ball is still good, and it can be used for training as usual. *Please understand that there may be minor scratches and dirt as it is a used item. [Product Name] J-Bands (J-Bands) Light Type It can strengthen the inner muscles of the shoulder while improving flexibility and range of motion. It is ideal for shoulder care and warm-up. Japanese professional baseball players also use this. [Recommended Points] ・Ideal for improving pitching form, strengthening shoulders and elbows, and warm-up. ・Used as a training method with proven results at the university, corporate, and professional levels. Please understand that this is a used item before purchasing. #baseball #pitcher #innermuscle #training