A medical electrode includes a conductive flexible member with a non-conductive flexible sheet disposed on a top side thereof. A connector is provided for establishing electrical contact between the conductive flexible member and an external electrical device and a conductive adhesive adhered to a bottom side of the conductive flexible member provides electrical conductivity to a patient's skin. The conductive adhesive includes a contact surface for application to a patient's skin and an edge perimeter subtending the contact surface and the conductive flexible member. A non-conductive coating is disposed on the edge perimeter of the conductive adhesive for providing an environmental and electrical barrier.