Abstract: Elastomeric interface for prosthesis having two integral and inseparable sections separated by a line of demarcation where the hardness of the two sections is shown. The interface has a first soft section and a second hard section. The soft section makes contact with the skin. The hard section is located at the connection points to the prosthesis. The interface is made by injecting a first batch of soft elastomer into a mold, followed by the injection of a second batch of hard elastomer into the mold, onto the first-formed part, so that the materials of different hardness bond naturally to one another.