This disclosure relates generally to adhesives and particularly to reversible adhesives. This disclosure further relates to generally adhesive articles and particularly to wound dressings comprising such adhesives. The adhesive comprises a core and a shell comprising at least two components. One of the components of the shell comprises a polymer formed by reacting a monomer of a thermally reversible polymer and the other component comprises a polymer formed by reacting a monomer of a polymer of a pressure sensitive adhesive. The wound dressing comprises a substrate and the reversible adhesive, forming a reversible wound dressing. Such wound dressings are particularly suitable for treatment of damaged sensitive tissue, for example wounds formed on a fragile skin.