The ecotype tempered cotton of TIM series (material) is developed by Li Yang Corporation which being using has advanced method with high temperature, high speed and the technology of high frequency microwave airflow extruding silk. It has a three-dimensional web structure of superfine fiber. Its exterior acreage in unit cubage can be several times than the common one. It has vast air because of the great numbers of minuteness air gap. The air's content is more then 90 percent, as a result, it can hold back the heat better than the common fiber. So it can make more great effect in keeping warm, even better than feather floss in the same one gram weight. It can adjust human body's exterior temperature properly, speed the microcirculation as preventing skin itch and eczema at the same time.