AuFlex 3-Chamber Deep Breathing Lung Respiratory Exerciser (600 Cc/Sec To 1200 Cc/sec, White)

Product is ok.Plastic is not that durable.Could crack if it falls down.Must handle it carefully.Otherwise , it fulfills the purpose.

Seemed defective. Very light weight. Tiny in size. No one was able to blow the third ball while the first two balls were easy to blow.

Hopeless product. One of the balls never move. Poor quality control. Overpriced. Just cheating. Don’t buy this product.

Seeing visible difference with few uses itself. At first, we will be able to fillup the column with blue color ball only. I think with usage, our lung capacity will increase and then we will be able to move the balls (yellow and green) in the other 2 columns too.