<p>A container assembly for controlling the thermal condition of cargo includes an insulated container having a cover and a pair of belt assemblies having a plurality of pouches. The container may comprise handles and/or a detachable and/or adjustable shoulder strap. The container assembly further includes a plurality of phase-changing material packs configured to provide for the control of the temperature of cargo contained within the container. The phase-changing material packs are positioned within the belt assemblies and are thermally conditioned prior to use. The belt assemblies may be made of a durable material and may be configured to provide for the expedient exchange of thermal energy between the phase-changing material packs and an exterior of the belt assemblies. The belt assemblies may comprise features that provide for the efficient orienting of the belt assemblies within the container and/or the appropriate selection of phase-changing material packs for a respective belt assembly.</p>
