Features: Adjustable Swing Bands Baseball/Softball Trainer enhances swing power and speed with customizable resistance level, perfect for refining batting mechanics through muscle engagement. Produced from practical elastic polyester, this sturdy resistance bands maintains tension during repeated stretches while offering flexible length adjustments for individualized training intensity. Ideal for youngsters player and adult athletes seeking to improve batting stance, core strength, and swing coordination in baseball or softball practices tasks. Use this practical swing at homes field, batting cages, or outdoor spaces to develop consistent hitting techniques through repetitive motion drill. The multifunctional design support single training or trainer guided drill, helping users grasp proper swing mechanics while building arm shoulder endurances for game ready performances. Specifications: Materials: Polyester Size:Approx.90x4cm/35.43x1.57inches Color: Black and Yellow/Black and Green Package Includes: 1Pc Baseball Training Strap note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.