SprinklesThe comfort and protection of the Pro Series with extra durable features. The Ultra Series has a reinforced nose wire sewn just below the trim, a structured inner support layer built to withstand wear and tear, and stopper beads on the ear loops to keep the adjusters from falling off. Happy Masks have the following features: 5 layers, including our ultra thin 3 ply nanofiber membrane filter, which has been tested by Nelson Labs to provide over 98%