Swing Stick Helps You To Target Train The Deep Muscles Of Your Chest, Abdomen, Back, Legs And Buttocks. Uses Vibration Training To Activate And Strengthen Your Core Muscles It Can Help Strengthen Your Back, Shoulders, Neck, Arms And Help Improve Your Posture Can Also Be Used For A Cardiovascular Workout, Coordinating And Strengthening The Core Muscles Designed For Both Men And Women Soft Grip For Comfort