Lung Trainer Breathing Exercise Device for Lungs，Mucus Removal & Lung Strengthening，Portable Expiratory Flutter Valve Clearing Device，Breathing aid airphysio

trains lung muscles:The device trains lung muscles to improve breathing and boost oxygen intake. Small and Portable: Only requires 5-10 minutes twice a day. This breathing exerciser allows you to train your lungs anytime, anywhere. 3 Different Sizes of Balls:Equipped with 15/17/19 mm balls, offers adjustable expiatory resistance levels. The larger ball delivers more resistance than the small one, and a greater resistance helps to clear the mucus more. It's suitable for individuals of all ages. Helps clear mucus naturally: When you breathe out, the ball rolls up and down inside the cone-shaped chamber. This creates vibrating air flow, which helps open blocked airways in the lungs. It loosens mucus, making it easier to breathe and strengthening your lung muscles. Purchase Guarantee:We are committed to providing perfect service as well as effective mucus removal solutions. If you are not satisfied, please contact us for a 100% refund!