WHY is wool warm?The warming properties of the insulation directly depend on how effectively it retains air at the surface of the body. The air layer prevents the outflow of heat, since air has a low thermal conductivity.
Any insulation, whether natural fluff, wool, synthetic fibers or fur, "binds" the air in its spatial structure and does not allow it to mix with the air of the environment.The spatial structure of the wool cover creates many closed air pockets, which hold the air against the body,
preventing the animal from freezing or, conversely, from dying of heat.
Besides this, air cavities may be inside the hair itself. The presence of air inside the hair significantly increases its thermal insulating properties.
