Full-face masks with face cushions that are triangular and fit near the bridge of the nose and below the bottom lip are the most common type of full-face mask and the easiest to fit. These triangular-shaped masks typically use a frame with a vertical bar between the cushion and forehead that ends in a soft pad that rests between your eyes. This design is very stable and leak-resistant. The ResMed Mirage and Respironics ComfortGel Blue Full Face Mask are examples of this style of full-face CPAP mask.
Some masks eliminate the vertical stabilizing bar and the forehead pad. They still sit over your nose and mouth, but nothing comes up between your eyes. This style may take a bit longer to stabilize but leaves your face free from wearing glasses and keeps your field of vision unobstructed. This style of full-face mask is an excellent choice for a mouth breather with claustrophobia. The ResMed Quattro Fx and ResMed AirTouch F20 are examples of this style of full-face mask.
Some full-face masks have an even more compact design and use a cushion that sits over the mouth and under the nostrils like the Dreamwear Full Face mask or the Amara View Mask by Philips Respironics and the AirFit F30 by ResMed. The cushion occludes the nostrils completely and seals around the mouth. This ultra-minimalist style may not be ideal for a person with CPAP settings in the higher range. It may also take a bit longer to fit precisely, but it does allow maximum freedom of movement with the least amount of contact on the face. The Respironics DreamWear Full face mask and the AirFit F30 by ResMed are examples of this over-the-mouth style mask. The Fisher & Paykel Oracle mask is similar, but it leaves the nostrils open.
New mask designs are coming out all the time with new options and variations. The Respironics FitLife is a mask that throws minimalism out the window. It fits across the forehead, over the eyes, mouth, and nose. The view through the mask is transparent. It gives tender spots like the bridge of the nose a break from CPAP cushion contact. The Circadence Anew is a full face mask made from cloth for people with silicone sensitivity.