Fisher & Paykel's updated RollFit Nasal Seal comes standard with all Eson 2 CPAP Masks. The RollFit cushion rolls back and forth on the nose, auto-adjusting during to reduce pressure and maintain a soft, secure fit. Eson 2's RollFit seal is softer, lighter and more compact than the original; but it contains increased structural support to improve fit and comfort. To accommodate a wide variety of face shapes, the RollFit Seal "rolls" back and forth on the nasal bridge seamlessly adjusting fit while you sleep to ensure a reliable, adaptable, and effective seal while providing pressure relief on the nose. RollFit seals are available in small, medium, and large sizes.