Most common water bottle

[Threewheelbonnie]

This is going to sound a weird question: Would anyone care to hazard a guess at the most common size/brand of bottled water in North Africa?

The reason: I'm making a new tonneau cover for the sidecar to allow it to close over the spare wheel, stop it flapping, make it tough etc. As this is an original design I add whatever features I like. I've decided to add pockets to hold something like 1.5 litre pop bottles on the basis that I can buy them four at a time, drink one, tip another into a bladder pack thingy and the others go in the pockets. The idea is that there is a little pouring as possible, they stay sealed, they are in a bit of insulation and I don't have to do a lot of rummaging to get a drink. The snag of course is that if I design for round 1.5's and everyone uses square 750's I'm wasteing my time.

Cheers (is there a joke in there? )

Andy