Not sure if this thread already exists but I didn't see one on a search.
I won't be doing this costume. No where big enough to pull it off but I am sure someone is.
I was looking at the pictures on this site...
The Dark Knight Rises Set Photos
I think Bane's pants are Crye Precision's GEN 1 Combat Pants...
You can see the full side zip and pockets match up. They also have that pocket retention strap. Crye made these in camo, green khaki and black like they do now.
These might be hard to come by as they don't make this pattern anymore.
Not sure if anyone cares. I just though I would share.