Optimise seal performance and comfort with the ResMed AirFit F30i Cushion. This under-the-nose cushion delivers effective airflow while reducing pressure on the nasal bridge—ideal for patients who find traditional full face masks bulky or uncomfortable.
 
Sizing is critical for this mask design:
Small / Medium – determine overall height and fit under the nose
Small Wide / Wide – provide a broader seal width for wider nasal and mouth coverage
 
An incorrect fit can lead to leaks, noise, or discomfort. Over time, cushions can lose their flexibility and seal quality—regular replacement (typically every 1–3 months) helps maintain comfort, reduce leaks, and ensure consistent CPAP therapy.