a collapsible wash bowl or a groundsheet (both green, both ex French army)
In the first picture, the groundsheet is on the left
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
folded four times. It's about 3m x 2m. The bowl is on the right. It sort of crumples rather than folds.
http://www.jubileegroup.co.uk/JOS/misc/dscf3855.jpg
In the second picture, there is just the bowl, with four litres of water in it. Tested for free.
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
With warm water it goes more circular more quickly. Being ex-army it's pretty tough material, a lot tougher than the ones you usually get in camping shops.
You can just about carry it full of water but I don't recommend doing any great distance.
http://www.jubileegroup.co.uk/JOS/misc/dscf3856.jpg
I've just noticed in the second picture there's what looks like a stain on the right of the bottom of the bowl. I didn't see that when I was taking the photo. It's actually some kind of reflection, there's no mark on the bottom of the bowl.