A dual modality system includes a flexible chassis including a durable energy subsystem and a replaceable thermal subsystem. The durable energy subsystem has a plurality of energy emitters disposed in an emission region of the chassis having a length and a width, wherein the emission region length and emission region width are both substantially greater than an emission region depth. The replaceable thermal subsystem has a thermal source affixed to flexible web having an adhesive surface and at least one structure arranged and configured to couple the thermal subsystem to a chassis comprising a durable energy subsystem in a configuration wherein the thermal source is substantially superposed over the emission region of the chassis.