The RemZzzs Padded Full Face CPAP Mask Liners provides a soft layer between the face and CPAP mask cushion. The liner can help alleviate several common CPAP therapy side effects. Many people experience noisy air leaks and excessive moisture from full face masks. RemZzzs liners are made from a special blend of natural cotton fibers which help prevent leaks and irritation while absorbing facial oils and moisture. Use the Full Face Sizing Chart to select the right liner for your mask.