It reduces mask leaks, pressure on the face and mask discomfort. It allows back and side sleeping, ear comfort, a pressure free mask zone, and support to keep face from rotating downward. The silky, quilted cover material follows the pillow’s contours for ease of movement. Soft velour cushions your head and the pillow cover easily zips off for washing. Constructed of high density foam. Neck support for back and side sleeping. Shoulder naturally rests in this curve for proper position and neck support. Pressure-free mask zone Head support area Ear comfort depression Inclined forehead support keeps face from rotating downward. Works with any sleeping position.