Heating mats have no additional thermal insulation and are highly flexible due to their design. The operating temperatures are between 0 and 900°C, according to type and design of the material and heating cables used. They cannot only be used on plain surfaces, but also for cylindrical pipes and containers. Different from the heating foils, the glass-or PTFE-insulated constant wattage heating cable is sewed onto a glass fibre support fabric in meandering shape (loop-shaped). A glass fibre covering material is fixed on top for mechanical protection. Sensors for temperature regulation as well as for limitation can be integrated. Precisely tailored installation is guaranteed by hooks, eyelets or lacings.