Automatic Rebound Abdominal Wheel

.Self-rebounding ab roller Rollers have a powerful built-in spring recoil to help you stretch and strengthen your abdominal, arm, chest, shoulder and back muscles, cushion incorrect strength patterns and protect you from injury during exercise, suitable for beginners. . Automatic timing function The large smart screen helps you accurately record your workout data in real time by recording repetitions, time and calories to improve efficiency and help you reach your goals