The present invention relates to coated particles comprising a coating and a core particle comprising an active, wherein the coating comprises a gas phase component. The invention also relates to processes for the manufacture of such coated particles comprising (a) providing a coating material comprising a gas phase component and applying the gas containing coating material to a core particle or (b) providing a coating material comprising a gas generating component, applying the coating material to a core particle and treating the coated particles so as to generate a gas from the gas generating component. Furthermore, it also relates to the use of such coated particles in a number of applications.