Which modeling program are you using with V-Ray? If in 3ds Max I would suggest using a VRay2SidedMtl https://docs.chaos.com/display/VMAX/VRay2SidedMtl You could also try VRayMtl with Translucency. https://docs.chaos.com/display/VMAX/VRayMtl#VRayMtl-Translucency
I'd use an opaque material with an inverted fresnel effect for the glow, you could use a mask on top of it to add in wires, overlaps, and wrinkles on top of it.
Hi Eric. I'm using Cinema 4d which does have a 2sidedmaterial but the results were less than desirable. Also been using fog color which is present in the previous renders. Thanks for that, I had a look through but not quite what I'm after. Translucency seems to give me a bit of a waxy finish. I did find something that's…