I got these some time ago from an Oxfam store. They are large regular sized ( equivalent ), sewn together with blue and green cotton inside. No tags or stamps other than 38 wrote in pen, this could be the oxfam sorted size because of the lack of tags etc..
They look French with a crude TAP style cargo pocket that is snap/button/velcro less, it has nothing to keep it closed.
They cost me £2.99