The present invention relates to a wound dressing which comprises a hydrocolloid adhesive mass comprising: a hydrophobic elastomer matrix comprising polystyrene-olefin-styrene) block copolymers, particles of hydrocolloid(s) dispersed in said elastomer matrix, at least two hydrogenated-hydrocarbon tackifying resins, the difference between the softening temperatures of a first hydrogenated-hydrocarbon tackifying resin and of a second hydrogenated-hydrocarbon tackifying resin comprised in the hydrocolloid adhesive mass being at least 10° C. and at most 40° C.
