The regulator is manufactured from impact resistant plastic with chrome plated brass valve components. It has a unique in-line mouthpiece design that provides a direct line between the demand valve mechanism and the mouthpiece for excellent breathing characteristics. The MiFlex hoses feature a patent pending double nylon safety braiding designed to outperform and outlive traditional rubber hoses. MiFlex hoses are 30% lighter than an equivalent length rubber hose and have unmatched flexibility. You can tie a MiFlex hose in a knot and be assured of continuous, uninterrupted airflow. MiFlex Hoses have a minimum burst pressure of 3600 psi (250 bar), more than twice rubber hoses.