Abstract: A one piece collapsible container that can be stored and shipped in a flat state is disclosed. The container has top and bottom panels of polygonal shape and side panels hingedly connected therebetween. Each side panel comprises an upper and lower trapezoidal shaped panel, the panels hingedly connected together base to base, so that when the container is collapsed, the panels fold together. The panels are designed so that the adjacent opposite panels overlap the adjacent sides sealing the corner between the sides. The overlapping panels are furnished with interlocking tabs so as to secure the sides together when the container is assembled. The interior of the container has concealed tabs so strengthening bands may be provided between adjacent sides.