SPIROMATIC 90U is an entry level breathing apparatus (SCBA) for fire fighting, excellent for industrial and maritime environments. Spiromatic 90U is built upon the proven and reliable S-facemask/breathing valve and plug-in regulator, delivering Interspiro performance at a competitive price. The facemasks positive pressure eliminates inward leakage of gases, vapours and liquids from the surrounding environment. The optional ambient air hatch allows the user to switch to ambient air while in stand-by. The high capacity regulator is equipped with a safety valve for maximum safety. The audible warning is placed on the chest; the alarm will be heard even under noisy conditions. The harness is equipped with padded shoulder straps and easily adjusted hip belt buckles, providing good comfort.