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.