Gymstick Airpad is a most very versatile exercise- and rehab tool and it is especially ideal for balance and core strength training. It suits well for flexibility training and stability exercises, too. Can be used while sitting, standing or lying down on it. The airpad is ideal for ankle rehabilitation. Using the pad on a chair while sitting can relief lower back problems as it activates the core muscles, stimulates the blood circulation and improves the posture – without noticing.