A preformed liner that expands when filled is provided. In one embodiment, the preformed liner includes a central section having a plurality of flutes that allow the liner to expand. In other embodiments, the preformed liner includes at least a central section that is made of an expandable or stretchable elastomeric material. In still other embodiments, the preformed liner includes a central section having a plurality of flutes and is made of an expandable or stretchable elastomeric material.
