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The Fibre. Today wool is still the worldâs leading animal natural fibre: its complex protein structure is responsible for unique characteristics and properties â such as exceptional resilience and elasticity â that synthetic fibres just cannot match.Wool has natural crimpiness and scale patterns that make it easy to spin.he Fibre. Today wool is still the worldâs leading animal natural fibre: its complex protein structure is responsible for unique characteristics and properties â such as exceptional resilience and elasticity â that synthetic fibres just cannot match.
Wool: The wool fibers comes from the skin of sheep and are relatively coarse fibers. Two striking characteristics of wool are its susceptibility to heat and its felting property, which is caused by the scales on the surface. Depending upon the breed of sheep, the appearance of the wool varies.ohair yarn is warm as wool, but much lighter in weight; it is durable, dyes well and does not felt easily. Mohair fibers have also a distinctive luster created by the way they reflect light. Despite being a hard fiber, mohair is usually spun into a very fluffy yarn, resulting in airy and lustrous garments.