Flat fold design provides additional comfort and fitting properties. Mask flexibility moves with the jaw allowing the mask to maintain a proper and more secure seal. Soft material feels great against the face improves user comfort and productivity. Pass through straps allow for quick and simple adjustment. Soft foam seal at nose bridnge provides addtional comfort. Adjustable aluminum bar at nose bridge allows user to fit the mask quickly and easily. Aluminum bar is sewn into material for dielectric applications.