The water rescue life jacket is a kind of clothing to ensure that the falling person floats on the water surface in a safe state and prevent drowning. The basic function of professional life jacket is to provide buoyancy, buoyancy is provided by buoyancy materials. So, do you know what buoyancy material the professional life jacket fills?

The buoyancy materials of professional life jackets at home and abroad can be divided into three categories:
1. Natural fibers, commonly used with kapok and cork;
2. It is a soft high closed-cell foam, commonly used are polyvinyl chloride, polystyrene, polyurethane, polyethylene, etc.
3. It is other new buoyancy materials.

The life jacket principle is divided into:
1. Buoyancy material filling life jacket, i.e. nylon cloth or neoprene rubber as fabric, with buoyancy material filled in the middle.
2. Inflatable life jacket: Made of high strength waterproof material, similar to the principle of inflatable life jacket or swimming ring. It can be divided into automatic inflatable type or passive inflatable type. However, this kind of life jacket should pay attention to: avoid sharp objects puncture or wear through the waterproof layer, leakage will cause unimaginable serious consequences.

Lifejackets have bright colors, so that rescuers can find you at a distance; secondly, life jackets generally have the function of protecting your body from injury. For example, life jackets have the function of guaranteeing that people can float on the water, and when someone sends out a distress signal, the lifeguards can easily find the trapped people, so as to quickly rescue the trapped people.

Use method of life jacket:
1. Put the lifejacket whistle bag on your body.
2. Pull up the zipper, tighten the front tie with both hands and tie the neckband.
3. Cross and bind the lower tie to the left and right of the forebody.
4. Check every place after wearing it.
5. Lifejackets must be fitted to the body.