The mummies of ancient Egyptian pharaohs were wrapped in amazingly strong linen, making them completely preserved today. Linen fabric is known as "natural air conditioner". The heat dissipation performance of flax is excellent, because flax is the only bundle fiber among natural fibers. Bundle fibers are formed by the adhesion of flax single cells with the help of colloid. Because there is no more air left, the air permeability of flax fabric is as high as 25% or more, so its thermal conductivity (air permeability) is excellent. It can quickly and effectively reduce the skin surface temperature by 4-8 ℃.

The flax fiber is straight and smooth. In the 50 times magnified projection, it looks like bamboo without distortion of cotton and wool fibers. This feature makes the textiles with fine dust or dirt easy to remove because the dust cannot find a hiding place.