the mask came apart after a little bit of use. not the strongest.
Tabitha, United Kingdom
f20 is much more comfortable than nasal masks i tried before, very great. sometimes it slip and i have some leaks but only rare.
This mask leaks too much, i don't understand how this happens, the f10 model operates without leaks at pressure 16 but the last model f20 makes leaks from 13-14 pressure. Maybe the mask size is not correst. Grigor, Pazardjik
wonderful full face mask, would recommend!
Thanks for the quick delivery, keep going guys your service is really impressive, James, Oklahoma city