This is a set of 3 FFI Style Mask Liners. 
 
Description
This Mask Liner will protect your face. It also will make the mask more comfortable to wear. It is washable and reusable and will last for 6 months to a year. The material is moisture wicking to keep the oil and sweat from your skin from soaking into your mask cushion. This means the cushion has to be replaced less frequently. The liner is not designed to prevent leaks but many people have told me that our liners do help with the leaks. It will make any leak quieter and you may be able to sleep through it (your machine is designed to compensate for small leaks). The Mask Liner makes the mask more comfortable to wear, so you will sleep better. The hole for the nose and mouth may need to be cut larger depending on your needs. Just cut a little at a time because it is very easy to get the hole too large accidentally. The velcro is large enough that you can make adjustments to fit your mask size.
This mask liner fits:
Fisher and Paykel Vitera All Sizes
Fisher and Paykel Simplus