1. TFO is an outdoor sports brand. TFO is the abbreviation of THE FIRST OUTDOOR, which means the first outdoor. It was founded in California in 1999.
 2. Because the environment is complex and changeable, outdoor sports usually wear functional outdoor clothing. When choosing outdoor clothing, you need to have the following characteristics:
 3. 1. Thermal insulation. It is not allowed to wear too thick and heavy clothes during outdoor sports, so it is necessary to keep warm and light. The common fabric is to add special ceramic powders containing chromium oxide, magnesium oxide, zirconia and so on in polyester and other synthetic fiber spinning solutions, which can absorb sunlight, convert light energy into heat energy, heat preservation, and energy storage.
 4. 2. Waterproof and moisture permeability. After exercise, the body will emit a lot of sweat. At this time, clothing is required to be able to dissipate sweat. Waterproof and moisture permeable clothing is usually coated with a layer of PTFE on the fabric, which can enhance the surface tension of the fabric, so that water droplets can be tightened without spreading, and can not soak the surface of the fabric. At the same time, this coating is porous, Monomolecular water vapor can be emitted to the fabric surface through the pores between fibers.
 5. 3. Quick drying. During outdoor sports, it is necessary to wear a fast drying garment. The sweat produced by the body is quickly absorbed, and then discharged and evaporated to keep the body dry and avoid disease.
 6. 4. Anti static. Outdoor clothing is usually made of chemical fibers. In a dry environment, it is easy to generate static electricity, which affects the precision of electronic instruments. Therefore, anti-static outdoor clothing should be selected.