ActiveCell Technology permits movement during sleep with less mask leakage.
ActiveCell Technology naturally adjusts to the different positions of sleepers who happen to move around a lot.
It keeps you from having to over-tighten your headgear while it provides a great seal relieving discomfort while preventing aching sores from pressure points.
It forms a bubble type seal which permits the frame of the mask to shift separately from the cushion.
This assists in keeping the mask in place and sealed even while changing sleep positions.