Comfortable Fit for Sensitive Skin — Creates a soft cotton barrier between your face and the F40 mask cushion, reducing redness, pressure lines, and silicone irritation. Wake up without red marks on your face.
Improves Seal and Reduces Air Leaks — The fabric layer fills micro-gaps between your skin and the mask cushion, helping minimize noisy air leaks even as you shift positions during sleep.
Precision-Cut for AirFit F40 Medium — Pre-sized specifically for the ResMed AirFit F40 full face mask in Medium. No scissors, no trimming, no guesswork — just consistent comfort every night.
Reusable and Easy to Maintain — Each liner is washable and reusable for up to one month of nightly use. 4-pack provides 2-4 months of comfort at just pennies per night.
Designed for Your Exact Mask — resplabs makes mask-specific liners, not generic one-size-fits-all. This liner is cut for the F40 Medium cushion. Also available in Small Wide and Large. Over 11,000 verified reviews across our CPAP product line.