Recommended for hitters aged 11 and up. Usage with the VL Harness is at full speed, but not necessarily max intent. This is a movement enhancement trainer that requires proper human movement that is both rhythmic and tempo driven. Breaking down VL Harness usage with robotic mechanical steps may cause improper usage. Drill steps can be broken down to create leverage points within swing, but uninhibited movement must be realized for performance gains. ALWAYS START WITH BACK HIP LINEAR DRIVE PHASE (6wk MINIMUM) BEFORE MOVING ONTO ROTATIONAL TORQUE TRAINING. VeloPRO Baseball's hitting enhancement program will be released by the end of April 2017, and will be made available at such time.