A flotation device is any object that can be used to keep a person afloat in water. The four solutions for the term 'flotation device' are VEST (4 letters), RAFT (4 letters), lifebelt (8 letters), and innertube (9 letters). A VEST is a buoyant garment typically worn over the torso, while a RAFT is a flat-bottomed boat made of wood or plastic. A lifebelt is a buoyant ring or belt that is used to keep a person afloat in water, and an innertube is an inflatable rubber tube used for recreational floating.