SWINGRAIL Baseball/Softball Training Aid COLLEGIATE BASEBALL'S "BEST OF SHOW" at the 2017 American Baseball Coaches Association Eliminates CASTING and Trains Player to HIT INSIDE the Ball; Corrects DROPPING OF THE HANDS and DROPPING OF THE SHOULDER; Reinforces STAYING CONNECTED and SHORT TO THE BALL NEW Redesigned Arm Band Adjusts to Fit Even the Smallest Arms; Recommended for Players Ages 9 and Up BREAKAWAY GUIDESTRAP Provides Immediate Feedback when Incorrect Swing Mechanics are Used