ConvaTec
The exhalation port of the ComfortGel Blue remains very low on the mask, and its swivel directs exhaled air to the side rather than straight ahead. This prevents breath from going toward the person sleeping next to you, and the ventilation noise remains discreet even in a quiet room.
The cushion combines a thin blue gel and an outer silicone membrane that conforms to the contours of the nose. Contact automatically readjusts when you change position, without needing to tighten the strap in the middle of the night.