The most comfortable mask I've used with my CPAP machine - and I needed a Large! (actually.... I need a Med / Large - but Resmed doesn't make yet!)
I've been arguing with my CPAP supply person who swears I should wear a medium. But the medium felt too small. To prove them wrong, i paid many times more than what I would pay at my supply house (for a full mask, tubing, and filters) for this mask insert only. But it was worth the purchase, because I proved them wrong - I have been wearing this mask insert at night (using the frame from my Medium mask) with my machine, and it works MUCH better than the medium I had before. I only wish Resmed would make "in between" sizes, as this one pushes the limits - very comfortable, but so large I get some air leaks. A medium - large would be perfect for me.... but they don't make one. So Large will have to do.
Verified purchase: YesCondition: New