I have identified your hitting trainer as the best for proper upper-body swing mechanics. - Howard Nakagama, Scout, Chicago White Sox ; USA.
LASER PST
"One of the Pony League teams, even though, not an elite junior team, are beating the elite middle school, baseball teams; they are using the Laser Power ST." - South Korea
LASER PST
"I finished the Laser Power ST training and checked the bat speed, swing time, and handle speed. Noticeably all of the records improved." - South Korea