PUSH is able to track jumping movements such as Vertical Jump, Jump Squat, Drop Jump, and Reactive Strength Index (RSI) that require the Band to be as close to the athlete's waist as possible. 

In order to make this easier, the Waistbelt is used to keep the Band secure exactly at the waist. 

This will help with getting accurate data if the athlete wants to use their arms during any of these exercises.