for use with: Resmed Activa (S), Resmed Activa LT (S), Resmed Mirage Micro (S), Resmed Ultra Mirage II Ultra Shallow/Wide (S), Fisher Paykel Flexifit 405 (S/M), Fisher Paykel 406 Petite (S), Fisher Paykel Zest Petite (S),Roscoe DreamEasy and Std (S) 30/cs