The North 7700 Series is made of soft, non-allergenic silicone. Because silicone is so much more flexible than organic rubber, it conforms to a worker's face. And three facepiece sizes make it much easier to fit your workers. The cradle suspension system also adds to the comfort of this respirator and doesn't slip like respirators with conventional strap systems. The cradle suspension gives an even seal without creating pressure points. The low profile gives workers a wide field of vision and room for protective eyewear. Its low inhalation and exhalation resistance makes breathing easier, leaving more energy for production.