Underarm Life Preserver (A/M) Part Number: IRN-NUR-PLT1 Specifically designed for Covert (C) operations, combat swimmers and/or maritime airborne ops. Provides independent left- and right-hand units and can be belt mounted, independently activated. -Buoyancy: 70 lbs. /30 kgs. 1752 Gms, -Inflation System: two 33 grams. CO2 cylinders