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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 fibre grows from the skin of sheep and is a relatively coarse and crimped fibre with scales on its surface. It is composed of protein. The fibre appearance varies depending on the breed of the sheep. Finer, softer and warmer fibres tend to be with more and smoother scales.