Abstract: Collapsible container apparatus (2) for the storage and transportation of fluid material, which collapsible container apparatus (2) comprises a collapsible outer bag (4), a rigid top portion (15) which is attached to sides (12) of the outer bag (4), a rigid base (16), horizontally extending constraint members (20) and elongate support members (22), the outer bag (4) having a discharge aperture (72), and the collapsible container apparatus (2) further including an auxiliary discharge member (108) for raising a part of the outer bag (4) opposite the discharge aperture (72) in order to cause the discharge aperture (70) to be at the lowest part of the outer bag (4) for complete discharging of the fluid material.