Under normal temperature, wearing linen clothes can reduce the real temperature of the human body by 4-5 degrees, so linen is also known as "natural air conditioner". Because flax is a rare natural fiber, accounting for only 1.5% of the natural fiber, the price of flax products is relatively expensive, and it has become a symbol of status and status abroad.

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 ℃.