a planar substrate comprising a long axis and further comprising one or more biocompatible electrodes configured to generate at least one of a low level electric field (LLEF) or low level electric current (LLEC), wherein said substrate comprises snaps, hooks, magnets, or velcro at opposite ends of its long axis wherein the biocompatible electrodes comprise a first array comprising a pattern of microcells formed from a first conductive material, and a second array comprising a pattern of microcells formed from a second conductive material and said planar substrate comprises a pouch to reversibly secure a washable, reusable insert to the planar substrate, said insert contacted with a conductive fluid prior to use, wherein said planar substrate produces a voltage of at least −8 volts for 18 hours after hydrating the substrate at 72° F. and 50% relative humidity; and further comprising a pouch for storing the system.