Product description:

ska-Pak supplied air respirator

? combination type c positive pressure respirator

? includes e-Z flo^? pressure demand regulator with first breath
  activation

? meets nfpa airflow rates for scba's

? systems for entry into or escape from hazardous, confined space,
  or immediately dangerous to life and health (idlh) situations
? choice of a 5-minute, 2216 psi aluminum cylinder or either a

10- or 15-minute, 3000 or 4500 psi hoop-wrap fiberglass cylinder ? 2 styles of harness:

Polypropylene - chemically resistant and lightweight

kevlar^? - ideal in high heat environments or when there is
potential for sparking