The oral cushion is what keeps the AirFit X30i mask comfortable and secure around your mouth while you sleep. The AirFit X30i Oral Cushion is designed to rest gently around your mouth without adding unnecessary pressure. It supports both nose and mouth breathing with minimal contact on the face, making it a practical option for those who move during sleep or open their mouth at night. Made from soft, medical-grade silicone, the cushion seals around the mouth without covering the nasal bridge. As part of the X30i’s hybrid system, it works alongside the nasal pillows to deliver full face therapy while keeping your line of sight clear and avoiding common pressure points. Replacing the oral cushion regularly helps maintain a secure seal and good hygiene. Since this part is in constant contact with airflow and moisture, it’s recommended to change it every two weeks to keep therapy effective and comfortable. Note: This is only the oral cushion for the AirFit X30i mask. It comes standard, and all frame sizes are compatible.