Universal Male and Female Automatic Rebound Abdominal Fitness Equipment (with Timer)

Elbow support web wheel， plank two in one. Scientific power， automatic rebound， and easier to use., Two wheels are more stable and safe， with automatic rebound and reasonable movement., Refusing ineffective exercise， precise use of abdominal muscles and multi angle lateral sliding allow for more stretching and movement of the waist， chest， and back muscles， making the body's lines more charming., Enlarge and widen the wheel body， making it more stable and non shaking., Retractable armrest with three gear adjustment， suitable for people of different heights.