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.

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.