Two hours a day 21 days a trial to change bad habits develop an upright posture.
The Switch Position is reasonable and can be easily turned on by adults and children. Wear all day to retrain your posture- it s nearly invisible when wear under a shirt.6 inches (W) x 3. Automatic memory function intelligent induction of incorrect posture hump bent over 25°,immediate vibration reminder automatic training of muscle upright habit.