The life jacket has good water buoyancy, is impermeable, easy to put on and take off, does not affect people's physical activities, and can indeed ensure the safety of people on the water. Our army has a vest-type life jacket. The waterproof layer on the surface is a double-sided tape made of special rubber. There are 4 floating sacs filled with kapok on the front and back. The total weight is only 1.5 kg, but it can produce more than 16 kg of Buoyancy, a fully armed warrior wears it and floats on the sea, the water surface will not exceed the shoulders. Even if the life jacket is torn, there is still a lot of buoyancy.

In addition to generating greater buoyancy, the pilot life jacket of the Naval Air Force also has the properties of easy identification and shark resistance. This kind of life jacket is also mostly vest type. In addition to the four floating sacs filled with kapok on its bust, there is also a blowing pipe on the protruding part of the floating sack. out to sea.
Life jacket, also known as life vest, is a kind of life-saving clothing, designed like a vest, made of nylon fabric or neoprene (NEOPRENE), buoyancy material or inflatable material, reflective material, etc. The general service life is 5-7 years, and it is one of the life-saving equipment on ships and planes. Generally vest type, made of foam plastic or cork. It has enough buoyancy to wear on the body, so that the head of the drowning person can stick out of the water