  We study the superfluid properties of a system of fully polarized dipolar
bosons moving in the $xy$ plane. We focus on the general case where the
polarization field forms an arbitrary angle $\alpha$ with respect to the $z$
axis, while the system is still stable. We use the diffusion Monte Carlo and
the path integral ground state methods to evaluate the one-body density matrix
and the superfluid fractions in the region of the phase diagram where the
system forms stripes. Despite its oscillatory behavior, the presence of a
finite large-distance asymptotic value in the $s$-wave component of the
one-body density matrix indicates the existence of a Bose condensate. The
superfluid fraction along the stripes direction is always close to 1, while in
the $y$ direction decreases to a small value that is nevertheless different
from zero. These two facts confirms that the stripe phase of the dipolar Bose
gas in 2D is superfluid.
