A lightweight flexible conduit particularly suitable for aircraft applications for shielding electrical wire and cable from electromagnetic interference and radio frequency interference. The apparatus including an inner core of elastically deformable flexible tubing having an outside surface of helical corrugations, metalized fabric wrapped around the helical corrugations and post-formed onto the corrugated helix of the core by string, thread, or wire which pulls the fabric down into the base of the continuous trough of the corrugations, and a protective jacket. A preferred embodiment of the present invention includes an axial drain wire incorporated into the lamination and running the length of the conduit to provide lower ground path resistance.