For anyone that uses a CPap, I highly recommend this product. I had a lipoma removed a few months ago because it was being irritated by my cpap. I then developed a seroma after surgery which was again affected by my cpap. My brillant sister suggested something like this so I ordered tjis one and used it while I slept all today with no issues. I normally would rip off my mask and sleep w/o it due to pain.. It feels like I'm sleeping on a ☁️☁️☁️☁️