Replacement Cushions for ResMed AirFit N30i Nasal Mask Size:Medium but it charges the battery

but it charges the battery (if attached) at the same time

Available in blue or red frames

under-the-nose full face cushion provides a secure seal without red marks

The product is designed to be replaced on a regular basis to provide the best performance of your mask

Replacement Cushions for ResMed AirFit N30i Nasal Mask Size:Medium but it charges the batteryThe Replacement Cushion for ResMed AirFit N30i Nasal Mask is the original replacement for your mask. The product is designed to be replaced on a regular basis to provide the best performance of your mask. Cushions available in 4 different sizes: Small, Medium, SM Wide, and Wide This cushion is only compatible with the ResMed AirFit N30i Nasal Mask. Returns on warranty issues only.