Flutter Valve, Breathing Exercise Device for Lungs, Adjustable Resistance Natural Mucus Clearance, Portable Lung Exerciser Device | Breathing Trainer

Have been using this for over a couple of weeks now. Simple to use and clean, compact, noticeable improvements in breathing, and clear lungs.

This device helps me tremendously. Easy to use and clean.

I ordered this a couple months ago, and wanted to give it a decent trial before reviewing. I think this really works well, and I can feel a difference. It really does loosen up the mucus and hake breathing easier and more effective. I highly recommend it. It is small, lightweight, and very easy to clean. Glad I noticed this item!!

This product works well and is very easy to use. I searched through many similar products and this product had the best value and is very durable.

This product came exactly how it is described with all the components and works excellently. It got my patient better quicker. It is very easy to use. The packaging is i've never had.Instructions are easy to read. The device is durable with multiple mouthpieces,l and easy to clean . Thank you so much.

Super helpful for my husband -- it was really straightforward to use.

Not bad actually helped out loosening some mucus. You pretty much have to blow into the device and it makes a good amount of vibration in your throat. Product looks well made will continue to use.

It helped clear my chest congestion when I was sick! Easy to use and easy to clean. I like it!