A Life Jacket will aid in preventing hypothermia, a serious risk when a rescue may take some time to arrive. The jacket will assist maintain body heat and keep a person's head above water, keeping it dry. This can lessen damage by absorbing some of the force of a fall. People wearing a life jacket can bring their legs into their chests, which decreases the flow of body heat, as opposed to expending heat and energy when treading water. To aid in rescue efforts, the majority of this jacket is brightly coloured.