restubeCO2 Replacement Cartridges for One-Pull Inflatable Swim Buoy (Set of 2) - 16g Waterproof Marine CO2 Inflators for Swimming Float Buoyancy Aid

I always found the orange original life vests are uncomfortable to where fishing on the river where I'm supposed to wear one at all times. This one is lightweight, comfortable and give you reassurance that your safe.

We purchased these and took them with us to the airport along with our Restubes, for a trip to Hawaii. The TSA pulled us aside because the TSA agents are incompetent and don't know their own published regulations. They just see CO2 cartridges and pull you aside. However, the real issue is that they ran their explosive residue swab test on these cartridges and the test came back problematic on one set of them, but not the other set (not sure if positive or inconclusive). The agent was confused and didn't know what to do. He walked around to waste time and then finally called the explosive expert at the airport. The explosive expert came and took one look at the cartridges and said they are ok. And finally, after 1 hour, we were allowed to proceed forward to the gate.So, the problem is that the manufacturer uses some kind of process during the manufacture of these cartridges that leaves residue behind to fool the airport explosives test machines. This is gross negligence by the manufacturer that causes seriously annoying problems for customers. They should be competent enough to clean the cartridges at the factory so this doesn't happen, especially considering customers will want to travel to their vacation destinations with these through airports and nobody wants this kind of inconvenience.