  Winds are ubiquitous in galaxies and often feature bubble structures. These
wind bubbles are characterized by an external forward shock expanding in the
surrounding medium and a wind termination shock separating the cool and fast
wind from the hot shocked wind. While the forward shock could not be able to
accelerate particles efficiently for a long time, at the wind termination shock
the necessary conditions for efficient acceleration may be present. We develop
a model for particle acceleration at the termination shock of such bubbles
analysing the consequences of different possible engines powering the wind. We
finally explore the multi-messenger potential of galactic winds in terms of
escaping cosmic rays and high-energy gamma rays and neutrinos produced through
hadronic interactions.
