Pannier

A pannier /ˈpæniər/ is a basket, bag, box, or similar container, carried in pairs either slung over the back of a beast of burden, or attached to the sides of a bicycle or motorcycle. The term derives from the Old French, from Classical Latin, word for bread basket.

Read more about Pannier:  Animal Panniers, Bicycle Panniers, Motorcycle Panniers, Aircraft Panniers