1. Product composition: abdominal training board; abdominal wheels; two rally ropes; two handles; one knee pad (length: 35 cm, width: 16 cm, height: 2 cm); a timer; instructions for use for beginners. Knee pads provide additional comfort and support when using the abdominal wheels, designed for users who want to relieve knee pressure during workouts without additional equipment. 2. Unique design: Elastic hoses control the rebound of the sliding rollers in the abdominal area. The flat design offers greater stability compared to traditional abdominal wheels, eliminating concerns about balance maintenance or the risk of breakage. 3. Multiple exercise styles: Seven usage methods are included, with detailed steps and techniques provided in the instructions. The abdominal wheels' design allows for versatile movements—besides strengthening core and arm muscles, they can also be placed under the feet to train leg and glute muscles.