Abdominal breathing exerciser is a breakthrough product for respiratory fitness training， <br />works to improve the strength of your lungs and slim your waist， face， and reduce abdomen.<br /><br />Features:<br />Reduce breathlessness and increase lung capacity by strength-training your respiratory muscles<br />Power up your lungs with a daily workout from the comfort of your armchair<br />Simply use it for about five minutes a day(equal to 30 times' breathing)<br />Small and compact， you can take it anywhere<br />It can be used by almost anyone with no side effects<br />Three adjustable step for your choice: weak， medium and strong<br /><br />Package include: 1 x abdominal breathing  trainer