Hope2sleep Charity's CPAP Results Using the DUAL BAND chin strap
The following chart shows some testing carried out with a CPAP user wearing his full face mask who is on good therapy with an AHI (apnoea hypopnoea index) of below 5, but leakage was not in good control. As you can see on the left of the chart, the leakage was fairly high.
The CPAP user then used the original Dual Band Premium Chinstrap (previous chinstraps tended to cause more leakage with this patient due to his jaw receding further with other chinstraps on). He changed to a nasal mask but with little 'hope' tried the Dual Band Premium Chinstrap. Much to his delight with the nasal mask and Dual Band Premium Chinstrap his AHI lowered to less than 1 breathing event per hour and no leaks were recorded (see right of the chart).
Not only does he feel better during the day due to nasal breathing, he has now ordered a nasal mask from his clinic due to the positive change in his therapy.