This top-of-head, 360 degree swivel connection, full face mask, does not cover the bridge of the nose. This prevents pressure sores on the nasal bridge and allows a clear field of vision while covering both your nose and your mouth. There are three frame sizes - small, medium and large. The fit pack comes with a medium frame that fits 85% of people. Small and large frames are sold separately on Amazon. The fit packs include all four cushion sizes - small, medium, medium-wide and large.