I came across this fabric the other day at Joann's in the Yaya-Han cosplay fabric section. Looks similar to the net/mesh fabrics that people are using on their Batman Begins suits.
It looks similar but it isn’t it. The mesh was used strictly on the dark knight suit and is gray with silver thread running through it. The 2mm is what was used but most people only have the 4mm if they have it at all.