The North Face and Fusalp have adopted the “intelligent heating technology” developed by Clim8, a four-year-old French firm, in the wake of Odlo, Ixon and Burton. For the next autumn/winter season, TNF will be using it in some versatile mid-layers and sport chic jackets, and Fusalp in gloves. Similar functionalities are embedded in a body heating system developed by a German firm, Intellitex, and adopted by Schöffel for critical areas of its ski clothing. Making use of very thick carbon tubes, the German system allows the wearer to keep the temperature constant and to shut it off when it’s not needed.