Core Energy 3 Comes with our original instruction manual that explains how professional baseball players wear it in practice The ultimate baseball

Color/Black Buckle color/gold Accessories/Comes with an original instruction manual that explains how to wear it in practice by professional baseball players. Material/Nylon, polyurethane, synthetic leather Size/length 105cm (free size), width 4cm It reduces the burden on the lower back and improves athletic performance. Its structure as a belt with support function has been recognized and patented! Developed by a professional baseball sports trainer, "Core Energy" applies abdominal pressure to the inner muscles and charges them with power. It changes the source of power, the transversus abdominis, and fits your body like a corset! Movement becomes more flexible. The strongest belt recommended by sports doctors. Strengthens inner muscles and improves pelvic balance. Experience an amazing performance improvement!