It was especially designed to efficiently lessen pressure points for excellent overall comfort. It includes a standard frame and cushion as the Mirage FX but the inclusive pink is a smaller. This product is very comfortable to use as it has less contact points. For quick cleaning, the four parts are easy to assemble and disassemble. The butterfly design of the apparatus is more flexible. The is the only part of the device that touches the facial skin of the user. For quick and easy connection and disconnection of the apparatus from the hose, the squeeze-tab elbow was integrated in the design. The Dual-wall, Spring Air Cushion provides balanced distribution of pressure on all sides of the cushion thus affording for less pressure points which protects the bridge of the nose from getting sore. The Mirage FX has a diffused vent design for gentler and quieter air diffusion. The SoftEdge is comfortable to wear even through a night of therapy.