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This is due to wool characteristics that also serve to make it the most unique, completely natural and multipurpose fiber available.1  Sheep wool has the capability to keep the body at at even temperature because it does not trap heat, it insulates instead. Felting is the nature of most animal fur that allows it to entangle and form mats of fabric. 2  The fibers (strands) can interlock with each other due to ridges on the individual fibers. 3  Sheep wool is highly regarded for its ability to felt and form fabrics that are near impossible to tear.
Wool products also use less energy than man-made fibres during manufacture. Sunsafe â wool has naturally high UV protection. Flame retardant â wool fibre has a higher ignition threshold than many other fibres and is flame retardant up to 600Âº C. It also produces less toxic fumes in a fire.urable and elastic â wool fibre can be bent 20,000 times without breaking and still have the power to recover and return to its natural shape. Quality wool garments look good for longer. Easy care â modern wool can be machine-washed; retaining a small amount of natural oil, wool fibre resists dirt and grease.