Abstract: A boat fender is provided with circumferential rings to prevent the fender from popping up from between the side of a boat and a corresponding dock or other structure to which the boat is tied off, with the circumferential exteriorally projecting rings providing for a rolling and tracking motion of the fender over the side of the boat to limit fender swing which maintains the fender in place and in a generally vertical orientation. This tracking prevents the non-tethered end of the fender from popping up and therefore provides security not available from other fenders, whether plain or having longitudinal ribs.