Fits the Following Mask Styles:</br>RESMED ACTIVA NASAL (Small) - RESMED ACTIVA LT NASAL (Small) - RESMED MIRAGE MICRO NASAL (Small) - FLEXIFIT 405 NASAL - (Small/Medium)</br>FLEXIFIT 406 PETITE (Small) - FISHER PAYKEL ZEST/PETITE (Small)</br>RESMED ULTRA MIRAGE 11 SHALLOW/SHALLOW-WIDE (Small)</br></br>Product Description</br></br>RemZzzs is an accessory to your mask?? made from a special blend of naturally absorbent fibers that are designed to help absorb facial oil and moisture. Why is this so important? An increase in moisture?? along with dirt and oil build-up?? usually results in a loss of air pressure which can set off an entire chain of events that ends with scenarios like the following: burping and squealing noises from