Fast delivery as usual, no hassle transaction. The mask is very different from my usual and I was a little worried but the description was correct and my worries were put aside after using the mask. I needed something to replace me having to use liners, and I have tried several different types, but none would work with me including gel masks, so I tried material and WOW it worked. It was the first morning that I have woken feeling ready for the day showing my last mask was not fitting correctly thus not working. It does take a little getting used to, though once you get used to the noise ( different type) and feel of two separate chambers for nose and mouth you will start to get the benefit of this mask. One big point I found was I needed to lower my usual air pressure and relax the head fastenings to get the full usage of the mask.