Life jackets might be the most important safety gear you can ... Adjust the waist buckle to accommodate additional layers (or that beer belly). Verify the CO2 cartridge is armed via a clear inspection ...

Pop in a new cartridge and Kingii is good to go again. Other automatic-inflate life jackets with similar features built in (replaceable CO2, a whistle and a compass) can cost more than $300 (but ...

Meet Kingii, a device that straps to your wrist that's seemingly intended to keep you safe in the water but is probably far less effective than a traditional life ... to a CO2 cartridge when ...

Compressed gas cylinders -- CO2 cartridges. If they are dangerous ... is the same valve that is found in every airline life jacket? They are made by Halkey Roberts in St. Petersburg.

It straps on like a wristband and is powered by a CO2 cartridge (conveniently Kingii ... to anyone who hates the idea of a fluorescent life jacket, however it doesn't look the most comfortable ...