Abstract A flexible fibrous sheet material is provided, the component fiber units of which are electrically non-conductive and magnetically non-responsive, said material having discrete areas of electrically conductive or magnetically responsive patterns in which the fiber units from one surface through to the corresponding opposite surface of the material are coated with a film of electrically conductive or magnetically responsive metal. This material is useful by way of example only, for decorative purposes, as a flexible electrical circuit, as a magnetically responsive article such as one track or multi-track recording tape, as part of a capacitance circuit, as a convenient electrical contacting lead and circuit connecting part of a human body to a medical instrument such as an electrocardiac machine, and the like.