ResMed has long been known for designing the most comfortable CPAP mask interfaces on the market and the streak continues with the new AirFit series N30i nasal style CPAP mask. The N30i is unique in the sense that it could be called a nasal pillow OR nasal mask. The curved cradle cushion offers a seal that is less invasive and unlike a nasal pillow, it does not use inserts that go directly into the nostrils. The minimal parts to this mask make it lightweight and the CPAP user barely notices it there as opposed to traditional style nasal masks that tend to be bulky with too much weight.

The top of the head tube design is one of the most notable features as it allows the user to sleep in any position without the interference of tubing that can sometimes get tangled in the bed. The tubing that connects to the elbow connector at the top of the head delivers air pressure throughout the mask frame on both sides. If a user sleeps on one side and reduces pressure on that side the CPAP pressure is compensated to deliver on the unobstructed side.