Review (4/5): They work
I bought this product because I had developed a pressure sore from my nasal cpap mask and needed something to ease the pressure and pain it was causing me. First off let me say these are felt cut outs and medical grade double sided tape. That being said they do work pretty well. I am on my third one. While I don't think they were made for someone who already has a pressure sore (it hurt alot until it healed, even with these things on my mask) they do pretty well at preventing you from getting new ones. They are soft. You have to trim them for a nasal mask or you won't be able to breathe. I was certainly expecting them to be thicker. But all and all they do what they are advertised to do even if they aren't a super impressive product. If you already have a tender spot you may want a product with more cushion.