Wool Explained: Quality, Welfare and What Certifications Actually Tell Us

Wool is one of the most useful fibres in fashion. It can be warm, breathable, moisture-managing, odour-resistant and long-lasting. It can work in winter knitwear, base layers, coats, tailoring and even lightweight dresses.

But not all wool is created equal.

In this solo episode of Responsible Fashion Lab, Maria looks at wool beyond the word on the label. What makes some wool soft and some wool itchy? What is the difference between coarse wool, fine wool, merino, lambswool, virgin wool, cashmere and alpaca? Why is merino used in performance clothing? And when does a “wool blend” stop being mainly about wool?

The episode also looks at the harder questions: animal welfare, mulesing, shearing, land management, overgrazing, cashmere and desertification risk, wool processing, superwash treatments, mothproofing, dyeing, blends and traceability.

Maria also explains what certifications such as RWS, ZQ, NATIVA, Responsible Alpaca Standard and OEKO-TEX can — and cannot — tell us.

A practical episode for anyone who wants to understand wool more clearly: how to read the label, what to check before buying, which claims need more detail, and why “natural” does not automatically mean responsible.

In this episode:

Why wool behaves differently from cotton, linen and synthetics

Why some wool feels soft and some feels itchy

What fibre fineness, staple length and garment construction mean

The difference between merino, lambswool, virgin wool, cashmere and alpaca

Why lightweight wool is not only for winter