According to one embodiment, a liquid container generally includes a base member, a sidewall member, a neck member, a spout, and a handle. The sidewall member is attached to and extends upwardly from the base member. The neck member couples the sidewall member to the spout. The base member has a recessed portion and at least one slot. The recessed portion extends upwardly into the container such that the base member may rest upon the neck member of another container. The slot may be tunnel-shaped to conform to one or more ribs of the neck member of another container. The tunnel shape may form a cavity that extends across the base member.