It looks uncomfortable to sleep in. you would need goggles, gloves and shoes too. I do wonder if it works on game like the video showed - now i'm curious.
woven carbon would be anti static but would allow some/alot of RF through - it would be interesting to see the attenuation at 2 GHZ. I think in the dry environment they were in, they EM meter might have measured the static charge he had collected.
this jacket uses the same idea -
http://ultrastat2000.com/esd_garments.html but the colors aren't as much fun. they're pretty common in the electronics industry.
the video test they did shows lowering of capacitance and maybe some EMF - i would think of this more as a stealth suit to avoid detectors using EMF ?!? range of about 0-1 Meters. I'm not betting very much on its ability to protect a pace maker - probably better than bare skin - but not to the point i would rate it better than a mylar space blanket.
to protect an I-phone, put it in a sealed sandwich bag and into a metal ammo can. (any faraday cage will stop the phone from getting email, texts or phone calls). or just put the phone in a plastic sandwich bag and wrap in a couple of layers of Aluminum foil. if you have a pacemaker and want to protect it, be in a car, elevator, parking garage, CONEX or the like during an EMP. If anyone has a better idea on a wearable faraday cage thats any better than this, i'de love to hear about it.