Inflatable life jackets have two functions: manual inflation and automatic inflation.

Manual inflation: pull the pull rope on the inflation device hard before or after falling into the water, make the pull rod turn not less than 90 degrees, puncture the cylinder diaphragm, high pressure CO2 gas rush into the airbag, and the gas will generate buoyancy after expansion.

Automatic inflation: after falling into the water, the life jacket is immersed in the water to soften the water sensitive elements in the automatic device, and the striker loses its resistance. The spring extension pushes the striker to pierce the sealing diaphragm of the gas cylinder, and the CO2 gas is filled into the air bag to generate buoyancy.

The blowing nozzle is of one-way valve type, and the one-way valve automatically closes after blowing.

The lifesaving vest should be red, yellow and other bright colors as far as possible, because once the wearer falls into the water accidentally, the rescuer can find you more easily. There should be a life-saving whistle on the vest to let the drowning person whistle for help. In order to find the drowning person easily in the sea, the fabric color of the life jacket is generally bright, and the reflective plates are installed at the two shoulders of the life jacket. Pay attention when purchasing.