Time to replace the memory foam cushion on your AirTouch F20 full-face mask? The UltraSoft memory foam cushion for the AirTouch F20 full-face mask brings comfort to CPAP therapy. This replaceable cushion adapts to your facial profile to deliver good fit and seal, and remains breathable. The memory foam is designed to minimise friction and contact pressure on your skin, limiting the likelihood of red facial marks.