The invention provides a container of flexible material comprising a pair of opposed side wall panels having longitudinal sides and an upper end and lower end, the side wall panels being secured to one another at their longitudinal sides to define a tubular structure, a base panel extending between the longitudinal sides of the side wall panels and being secured towards one end of the tubular structure, and a roof panel extending between the longitudinal sides of the side wall panels and being secured towards the other end of the tubular structure, the base panel and roof panel each folding inwardly between the side wall panels in two halves superimposed on one another when the container is in a deflated configuration.
