The AirTouch F20 CPAP Mask features ResMed's softest ever UltraSoft Memory Foam Cushion! UltraSoft Memory Foam cushions are incredibly soft, breathable, and adaptable so they provide a much more gentle and flexible seal than traditional silicone cushions -- even at high pressures. AirTouch F20 also features plush headgear and circular diffused venting for the ultimate in sleep therapy comfort.