Abstract: A container system and a method for transporting hazardous materials is disclosed. One embodiment of the container system includes a soft-sided outer shell and an inner frame. The outer shell is at least partially collapsable when unsupported. The outer shell may include a plurality of vertical walls integrally formed with a bottom and an open top. A lid may be adapted to be selectively secured to the vertical walls to close the outer shell. A fastener, such as a zipper, may be provided to secure the lid to the vertical walls. The inner frame has rigid walls and is adapted to support the outer shell when the inner frame is inserted inside the outer shell. The inner frame is at least partially collapsable. One embodiment of the method includes providing a soft-sided container that is at least partially collapsable when unsupported. Hazardous material is positioned into the container.