Patient interfaces having an oral portion and a nasal portion and additional features of a seal-forming structure and a shell are described. Various embodiments of a seal-forming structure are contemplated that comprise arrangements having areas with a higher resistance to deformation at laterally spaced portions of either the nasal portion or of the oral portion. Another seal forming structure comprises a bridge portion that can be deformed to accommodate different patient nose lengths. Yet another seal-forming structure comprises different surface finishes on the nasal portion and the oral portion.
