【2-in-1 Design & With Armrests】 Not only can you use the ab roller to get ripped abs, but you can also easily do planks, allowing you to train your entire body thoroughly. The armrests also support your body, increasing stability and reducing the burden on your arms and shoulders. 【Auto-Return Function, Further Enhancing Efficiency】 The auto-return design allows even beginners to exercise with ease. The auto-return feature is easier to use for beginners, adds to the enjoyment, and is expected to increase motivation to continue. It also has a smartphone holder and timer function. By watching videos and exercise data, you can adjust the amount and speed of your training, thereby enhancing the exercise effect. 【Easy Assembly & Portable】 The ab wheel can be easily and smoothly assembled in a short time, even by beginners. It doesn't take up much storage space, doesn't damage the floor, and is quiet, so you can use it at home with peace of mind. You can put it in your bag and take it anywhere you want, and start training anytime. 【Training Frequency & Support】 For beginners, training three days a week is appropriate. It is recommended to take a 1-minute break between sets and aim for 3 sets of 10 repetitions. Please adjust the training frequency and time to suit your convenience. Also, it is normal to experience slight muscle soreness the day after exercising.