Army Duck Europa Medium with Back Zipper Bqt/Mdn/Ivy. ARMY DUCK is used for a variety of purposes including military tents and canvases for artist's paintings. Now you can have a Manhattan Portage bag made out of this fine canvas weave with a smooth water repellent finish! Amaze your friends with the amazing Europa that comes with a back pocket that can be unzipped at the bottom panel and easily slip this on to any piece of rolling luggage, as well a