FABRIC EXPLAINED

Natural fiber / Fiber

Wool

An animal fiber with natural resilience, used in knits and woven cloth.

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Grey wool roving before spinning
Grey wool roving before spinning. Image credits.

What is wool?

Wool is an animal protein fiber; Merino is one type of sheep’s wool. [2][1]

Classification
Fiber · Natural
Other names & related terms
Sheep’s wool; Merino wool (a type)

These are qualitative descriptions, not lab scores. Fiber, yarn, construction, finish and garment design can change performance. Always follow the finished article’s care label.

Composition

Protein fiber; wool blends contain additional fibers. [2]

Material origin

Obtained from sheep fleece, then processed into textile fiber. [2]

Breathability & moisture

Can absorb moisture vapor; airflow varies with the fabric. [2][P]

Durability

Natural resilience supports wear; assess the finished construction. [2]

Stretch characteristics

Natural stretch and recovery, with additional give in knitted structures. [G][K]

Care guidance

Follow the wool care label; machine wash or tumble dry only when permitted. [1][C]

Typical applications

  • Knitwear
  • Outerwear
  • Tailoring

Examples, not suitability certifications. Sources: [2]

Advantages & limitations

What it offers

Resilience and moisture management. [2]

What to consider

Some articles need careful washing to prevent felting or distortion. [1][G]

Practical editorial guidance

Before you choose

A fine knitted base layer and a heavy coat can both be wool. Choose the finished fabric for the climate and intended layering. If easy laundering matters, look for an explicit machine-wash care claim rather than assuming all wool needs the same care.

Sources & review notes

References support the statements marked above. Industry sources may promote their own materials; this guide makes no universal comfort or sustainability ranking.

Last reviewed: . Suggest a correction.