WONDER CORE Slide Fit, Ab Roller Board with 4 Wheels, Automatic Rebound Abdominal Wheel for Core Workout, Ab Exercise Equipment, Abdominal Exerciser, Heroboard Fitness Rolling Board with Knee Pad

💪【4 Wheels Stable Workout Equipment for Abs】:NOTE: Please do not use on carpets! Our ab roller machine won US Invention Patent in 2021, Patent No.:11,033,768, Certified by TÜV Rheinland in Germany in 2020, which is designed with four wheels to provide stability and prevent rolling over during workouts, ensuring safety and avoiding injuries.
💪【 Automatic Rebound Abdominal Wheel】: The abs roller features two-way automatic rebound technology that generates resistance when pushing forward or backward. It also automatically brakes when reaching 5 ft to prevent injuries. Beginners can easily control the roller as it generates power when pulling back.
💪【3 Workout Modes Abdominal Exercises Wheel】: This abdominal wheel offers three workout modes suitable for people of all ages and fitness levels. You can adjust the resistance devices on both sides for maximum rebound power, turn on one side for less rebound power, or turn off both sides for unassisted rebound exercises.