This application describes insulated panel systems with first and second encapsulated foam core panels having foam cores, coated with or otherwise encapsulated in a shell material. Front and back overlap members may be fixed to the first encapsulated foam core panel or the second encapsulated foam core panel to allow the insulated panel system to removeably cover a container around a perimeter of the container (i.e., in a lateral direction relative to the container). A drip edge and overlap member may be fixed to the first encapsulated foam core panel to allow the insulated panel system to removeably cover a container vertically along a height of the container (i.e., in a vertical direction relative to the container).