A collapsible bulk material container and sleeve configuration thereof are disclosed. The container includes a forming member assembly that provides container rigidity and stability and forms an internal geometric volumetric cavity for containing a bulk material load. A continuously woven sleeve having contiguous woven zones of selectable varied fabric weight and strength engage the forming member and provide the primary containment strength of the container. The sleeve engages the forming member either externally or internally. The sleeve includes a fabric weight zone of greatest strength adjacent the lower portion of the container.