Full face masks help ensure you are getting the pressure you need, regardless of if you breathe through your mouth or nose, they are also helpful for patients with higher than average pressure settings, as smaller masks may leak. If you are looking for a more stable, secure mask, try looking at the Fisher & Paykel Vitera. If you are looking for a full face mask with less facial coverage, take a look at the ResMed F30 or Respironics DreamWear Full Face Mask.