Abstract: A demountable bottom opening, foldable and reusable container for finely divided materials such as chopped glass fiber strands and other bulk, flowable materials is disclosed. The container is adapted to be mounted on a permanent pallet of great rigidity. The pallet is comprised of a skeletal base frame on which is mounted a shallow crown which receives and supports the container. The crown surrounds a central opening which is closed by hinged hexagonally-shaped flaps locked in position when the loaded containers are stored or transported. The flaps are unlocked to swing down to the sides of the opening so that they do not interfere with unloading of the container thereby insuring complete emptying. The use of an impervious foldable sleeve extending from the opening in the container and which unfolds to serve as a funnel through which the material is unloaded into a hopper beneath the pallet is also disclosed.