Automatic Rebound Abdominal Wheel Plank Ab Roller Wheel for Core Trainer Includes Knee MatHigh-Class MaterialWheel uses high-quality material,sturdy and durable,has good impact ; the handle is filled with EVA foam for added comfort; rubber wide wheels are more durable,do not damage the floor,and are more silent.No Lateral ShiftingThe rollers are 4 inches wide and more stable,with enhanced control of front and rear motion without lateral offset,Abdominal Wheel makes core training easier and more enjoyable.Automatic Rebound Designfor Abs Workout adopts automatic rebound technology,easy to slide,can reduce the swing of the wheels,help you control the movement,and protect you from injury during exercise.Great GiftAbdominal Exercise Roller is suitable for relatives and friends who like to exercise. It is a great gift choice to express your care and love. It is very practical.Versatile UsageAb Workout Roller is suitable for use at home,gym,,to help stretch and exercise abdominal,arm,chest,shoulder and back muscles,get six pack abdominal muscles.