Having mocked up a double box pleat and a military box pleat, the double box pleat is distinctly more draughty. The open centre seems to act like bellows to draw in and then waft the air towards the body.

I suspect that the double box will prove to be cooler, when in motion, than any of the other methods of pleating.

As this is 6 and 1/2 yards of single width material, and posssibly a bit skimpy for the knife pleats, I'd say the double box is not only going to be visually stunning but prove to have inbuilt punkah function.

Oh - a punkah wallah was the poor fellow who worked the large ceiling fans by pulling on a cord, but who sat outside and got no benefit from his efforts, just in case anyone is unfamiliar with British Raj house servant names...

Anne the Pleater