A container includes a container body, a body insert, a seal structure, and a cover. The container body has a cavity therein defined by a closed lower end portion thereof and an open upper end portion thereof. The body insert is within the cavity. At least a portion of a bottom wall of the body insert is spaced away from an interior surface of the container body defining the closed lower end portion thereof. The seal structure is between the body insert and the container body such that a sealed gas chamber is defined within the cavity between the container body and the body insert. The cover is movably attached to at least one of the container body and the body insert in a manner allowing the cover to be moved between a position covering the cavity and a position allowing access into the cavity.
