DescriptionThis is a tremor fitness bar. In the process of using the vibrating rod to exercise, the rod will produce a specific amplitude, so that the deep trunk muscles, abdominal muscles, shoulder muscles and the core muscles of the back are in a tight state and continue to be stimulated by the amplitude. To promote muscle growth and the body's metabolism.Features- Material: Glass Fiber, Rubber- It is made of high-quality materials and has a long service life. - Our fitness bar design with quality grip, and the grip will be comfortable and not slippery. - Suitable for fitness enthusiasts of all ages, gymnasiums and family sports. - A must-have for fitness, this fitness bar can be used as gifts for family and friends. - With reasonable design, it can effectively exercise your muscles.