Core Energy Baseball Belt. Used by over 600+ Professional Athletes Performance: designed by a professional baseball trainer to aid the engagement of your abdominals that support your swing and throwing. Reduce injuries: The belt provides support for the lower back without inhibiting movement. Comfort: It’s comfortable and flexible around your waist. Find out why players prefer our stretch effect over a ridged baseball belt. Made in Japan: Manufactured in-house in our factory in Nagoya, Japan