A temperature-protective package includes a rigid container configured to receive a temperature-sensitive product. A flexible liner is attached to the rigid container such that a pocket is formed between the rigid container and the flexible liner. Phase change material (PCM) is situated in the pocket. The PCM conforms to a contoured surface of the rigid container. In an alternative implementation, a temperature-sensitive package includes a pocket of PCM within a flexible liner. The flexible liner defines a preferred shape of the temperature-protective package. The flexible liner also defines an opening for receiving a product. The opening corresponds to the preferred shape. In one implementation, multiple flexible liners can be utilized to define the preferred shape and the opening.