RemZzzs Cpap full face mask liners - the Cpap accessory that helps you sleep by eliminating the sleep disruptions and discomfort caused by your Cpap mask Soft, breathable Cpap liner absorbs facial oils and moisture and prevents painful blisters, pressure marks and skin irritations RemZzzs helps you sleep through the night by reducing noisy air leaks. They are 100% cotton disposable mask liners Compatible with: Resmed, Respironics and DeVilbiss Cpap masks - see the size chart image for more information on specific masks and sizes Each package contains 30 disposable mask liners or a 30 day supply and 2 forehead liners