PPLICATION & ERGONOMIC DESIGN — This handheld vibration massage gun is ideal for muscle soreness after exercise especially after high-intensity workouts, and for physical and mental exertion caused by sitting in the office. The ergonomically designed handle minimizes external vibration, and makes the massager easier to handle and more comfortable. Ideal as a gift. If you have any questions or are not satisfied, please contact us by email and we will provide you with quality assurance.