Tennis Shoulder Rotation Sensor

use your shoulders correctly in forehand and serving!

Learn how to rotate your shoulder in your forehand shot and in your serving. Create a wide arc and rotate your shoulder through the ball when hitting modern forehand. Create correct Trophy position and 90% position and width in serving motion.

• use it in modern forehand or serving
• easy to use for anyone; junior, women, men
• use it with or without tennis balls
• speed up Learning correct forehand or serving motion
• learn how to use rotate your shoulders in modern tennis!