【Automatic Rebound Design】 Our abdomen wheel adopts automatic rebound technology, equipped with a intelligent auxiliary brake system, and a built -in brake device to ensure that the steel rebound is smoother. 【Ab Roller with Elbow Support】 The upgraded version of the abdominal wheel is equipped with elbow support design to improve the stability during exercise, reduce side shifts, and avoid excessive force of the arm. In this way, you can activate the abdominal muscles more accurately and effectively, focus on training abdominal and core muscles, and do not need to worry about arms fatigue or injury. 【Two-in-one Abdomen Exercise and Tablet Supporter】Scientific force, automatically rebound, easy to use. Five layers of non -slip materials are used to achieve non -slip, noise reduction, wear -resistant: non -slip layer, enhanced layer, shock absorption layer, noise reduction layer, and support layer. 【Stable and Safe Exercise Experience】 The abdomen wheel adopts a four -wheel design with a wide and widening/lengthened wheel, increasing the wheel distance, expanding the contact area with the ground, effectively reducing the roll, and enhancing the stability during exercise. 【Ergonomic Design】 Our abdomen wheel adopts ergonomic design and is equipped with elbow support, which can not only exercise back, shoulders and chest muscles, but also shape abdominal, core muscle groups and trunk lines. Specifications and weight loss effects.