Life jacket, also known as life vest, is a life-saving clothing. It is designed like a vest and made of nylon fabric or neoprene, buoyancy material or inflatable material, reflective material, etc. The general service life is 5-7 years, which is one of the life-saving equipment on ships and aircraft. It is generally vest type, made of foam plastic or cork. Wearing on the body has enough buoyancy to make the head of the person falling into the water surface.

Inflatable life jacket: It is made of high-strength waterproof materials, similar to the principle of inflatable life buoy or swimming buoy. It can be divided into automatic inflation type or passive inflation type. However, the most important thing to pay attention to this life jacket is to absolutely avoid sharp objects penetrating or abrading the waterproof layer, which will cause unimaginable serious consequences after air leakage.