A transportable container for flowable bulk goods is formed by disposing an outer wrap around a bottom support and a portion of a vertically spaced slip frame former. One of the slip frame former and the bottom support moves vertically relative to other in response to the fill level of the bulk goods. As bulk goods are added to the transportable container, the position of the slip frame former is radially adjusted to modify the shape of the transportable container. As the fill level increases in the transportable container, previously disposed portions of outer wrap are disengaged from the slip frame former to squeeze the filled portions of the transportable container. Additional portions of outer wrap are disposed around a portion of the slip frame former to maintain the transportable container for receiving bulk goods as the previously disposed portions of outer wrap are disengaged.