【Automatic Rebound Design】Our ab wheel adopts automatic rebound technology, featuring an intelligent auxiliary braking system and built-in braking device, ensuring a smoother steel rebound. 【Ab Wheel with Elbow Support】The upgraded ab wheel is equipped with an elbow support design to enhance stability during exercise, reduce lateral movement, and avoid excessive arm strain. This allows you to activate your abdominal muscles more accurately and effectively, focusing on training your abs and core muscles without worrying about arm fatigue or injury. 【2-in-1 Abdominal Exercise Machine and Tablet Holder】The power of science, automatic rebound, and easy to use. Five layers of non-slip materials are used to achieve non-slip, noise reduction, and wear resistance: a non-slip layer, a reinforcement layer, a shock absorption layer, a noise reduction layer, and a support layer. 【Stable and Safe Exercise Experience】The ab wheel adopts a 4-wheel design with a wider and longer wheelbase, increasing the wheelbase and expanding the contact area with the ground, effectively reducing rolling during exercise and enhancing stability. 【Ergonomic Design】Our ab roller adopts an ergonomic design and is equipped with elbow support, which not only trains the back, shoulder, and chest muscles but also shapes the abdominal muscles, core muscles, and torso lines, contributing to improved physique and weight loss effects. This product is new. The package has some damage. Please purchase only if you understand this.