2. There should be a life-saving whistle on the life vest, so that those who fall into the water can whistle for help.
3. In order to easily find the person who fell into the water in the sea, the color of the fabric of the lifejacket is generally brighter, and there are reflectors on the shoulders of the lifejacket. Pay attention to it when purchasing.
4. Knot the straps so that they won’t loosen due to impact or floating for a long time during diving.