Jaeger Sports Bands Jaeger Sports J-Bands are a mandatory tool for any baseball or softball player who wants their arm to be a strength, rather than a liability. This rotator cuff exercise program is the key to preventing arm injuries while promoting arm health, strength, endurance and recovery period. Just as sprinters would never consider running a race without thoroughly stretching out their hamstrings, baseball/softball players should never consider picking up a ball without doing their stretches with surgical tubing bands. The J-Bands allow you to perform 10 basic exercises to strengthen and protect the rotator cuff muscle group. These exercises are demonstrated in detail in our video Thrive on Throwing by Mike Lieberthal (Phillies) and John Snyder (Padres). Jaeger Sports has consulted with the Texas Rangers, Minnesota Twins, LA Angels, and has trained over 200 professional baseball players, including Cy Young Award Winner Barry Zito and All Star Dan Haren. Ages 14 and older.