  This paper investigates a particular type of wormhole. The wormholes studied
are the result of sewing together two Reissner-Nordstrom-type black hole
metrics at their horizons. By requiring the stress-energy tensor associated
with this geometry to be that of a Kalb-Ramond field, we obtain the mass and
Kalb-Ramond charge of the wormholes in terms of the parameters describing the
mass density, tension and pressure. We show by direct calculation of the action
of these wormholes that they can be made quasi-stable against tunnelling to the
vacuum via gravitational instantons by a suitable choice of the parameters.
