There are vendors of conductive fabrics; I bought some from LessEMF.com for the purpose of some experiments with RFID/NFC shielding so I have first-hand experience with the parameters.
First, they tend to be somewhat expensive. But that apparently comes with the territory.
Some are quite pretty, with metallic sheen. Some are even nice to touch. Beware of those with nickel coating due to possible allergies.
I used the material for modification of military surplus gloves to work with a touchscreen phone (line the thumb with it, from both outside and inside, and sew together with conductive fiber to interconnect the contacts). Works like a charm.
A coat liner or an undershirt made from this material will do a perfect job for shortcircuiting electrical weapons. May even be somewhat cheaper than carbon fibers (check this claim).
If someone here has access to the equipment, please check if the materials could also act as a "privacy screen" against terahertz and xray-backscatter images. Theoretically they should at least significantly attenuate the signals.