The present invention relates to a sensor which comprises an electrode, a track and an electrical connector, wherein the track is comprising an electrically conductive flexible and elastic material that comprises an electrically conductive material that is non-contiguous that when stretched is able to transmit an electrical signal from an electrode to an electrical connector and from an electrical connector to an electrode. The present invention also relates to the use of a silicone rubber and/or fluorosilicone rubber loaded with an electrically conductive material for the preparation of the track.
