When it comes to additional safety features on life jackets, some come with none as standard, and some may have one or two additional features. However, it’s important to note that these can be added afterward. For example, crotch straps, a whistle, a light, and a spray hood are all things that could enhance your chances of survival, so you may want to consider adding them on. “If there are crotch straps to stop the lifejacket from rising up, make sure to use them,” Davidson says.