Drowning Rescue Device. Courage. SB/18 Made up of two Air Bag balloons, contained in two small containers, fixed on adjustable straps that bind the torso from the groin to the shoulders, the two balloons are individually connected to two quick inflating devices that open gas cylinders, which open in case of emergency, swelling ensures re-measurement and subsequent floating, bright and reflective colors, facilitate their identification even at night, in case of emergency.