The Powa™ Elite valve and Techno™ filter kit is an upgrade for any Respro® Mask which incorporates valves in the design. The larger valves provide rapid exhalation of heat water vapour and Carbon dioxide. The Techno™ filter maintains best filtration against sub-micron particulates VOC’s acid gases and other exhaust emissions. The Powa™ Elite valve is robust and has a variable vane system to maximise airflow when it comes to elevated breathing rates while exercising. Rapid Air Flow™ valves (RAF) Diaphragm made from medical grade silicon rubber Minimal water vapour build up inside the mask For use with any Respro® mask (with the exception of the Metro Mask)