The Philips Respironics TrueBlue Nasal mask has a unique flexible spring that connects the frame to an inflatable outer cushion so the mask can fit loosely. This offers a more reliable seal and is less likely to irritate the bridge of your nose and allows for movement during sleep. Offering a higher degree of comfort and flexibility, the TrueBlue also includes a soft, gel forehead pad, which is easy to remove and adjust. The pad swivels up and down, easily conforming to your forehead. The gel nose cushion also molds to the shape of your nose. The spring and gel cushion easily and quickly click together with three contact points. The durable headgear clips are easy to hook with a single click and unhook with a simple twist. The headgear has four adjustable straps that join into a single back panel with a crown strap for additional stability.