When we were kids on ski trips, mom would stuff these brown heat packs into our boots and jackets, producing burning spots of intense pain that only created hygienic problems beyond a simple case of cold indexes. Hoping to save cold children (and, really, motorcycling adults), Grado Zero Space have created the Intelligent Object to Wear (or IOW). It uses five heating pads linked to a microprocessor that monitors body temperature and adjusts accordingly. A 12 volt power supply is linked to the bike itself, so it appears battery time is not an issue. Mobility, however is, as you'll need a running motorcycle nearby. So much for the children.