The fashion industry has spent years rethinking the materials used to create clothing, with fur becoming one of the most visible targets of animal-welfare campaigns.
Now, wool is facing a similar question.
For generations, wool has been regarded as one of fashion’s most useful natural fibres. It is warm, breathable, moisture-managing and durable, making it particularly valuable for knitwear, coats, tailoring and cold-weather clothing. Unlike petroleum-based synthetic fibres, wool is also a renewable natural material.
Yet its position in fashion is becoming increasingly complicated as concerns about animal welfare and supply-chain transparency move closer to the centre of the industry.
The debate became particularly visible during New York Fashion Week in September 2026, when animal-rights activists from People for the Ethical Treatment of Animals, PETA, disrupted a COS runway show to protest the brand’s use of wool.
The demonstration attracted international attention after Steven Kolb, chief executive of the Council of Fashion Designers of America, was filmed physically restraining protesters. Kolb later apologised and took a voluntary leave of absence while the incident was reviewed.
But beyond the confrontation itself, the protest raised a much bigger question for the fashion industry: if fashion can move away from fur because of animal-welfare concerns, could wool eventually face the same pressure?
For campaigners, the answer is straightforward.
PETA has argued that wool production can involve practices that cause suffering to sheep, including mulesing, a procedure used in parts of the Australian sheep industry to reduce the risk of flystrike. The organisation maintains that certification systems cannot guarantee that cruelty has been completely eliminated from wool production.
This has placed fashion brands in an increasingly difficult position.
Many companies do not view wool in the same way as fur because sheep are generally raised for their wool rather than killed specifically for their pelts. Wool production can also provide an economic livelihood for farmers and communities involved in sheep farming.
That distinction, however, does not completely resolve the animal-welfare debate.
The question is increasingly shifting from whether wool should exist in fashion to how it is produced, where it comes from and what standards are used to protect the animals involved.
Certification has therefore become an important part of the industry’s response.
The Responsible Wool Standard, for example, establishes requirements covering animal welfare, land management and social practices across certified wool supply chains. Textile Exchange says the standard is intended to improve the welfare of sheep and the land on which they graze.
COS owner H&M Group has also defended its approach to wool sourcing, saying it is committed to certified and recycled animal fibres. The company has stated that virgin wool used in its products comes from farms certified under the Responsible Wool Standard.
However, the existence of certification has not ended the argument.
Critics say certification alone cannot solve every problem in a global supply chain. Campaigners have continued to investigate farms operating under certification schemes, arguing that violations can still occur.
This has created a difficult choice for fashion companies.
A complete move away from wool could satisfy consumers and organisations seeking animal-free fashion, but it could also create another environmental problem if brands simply replace wool with petroleum-based synthetic fibres.
That is because alternatives are not automatically better.
Polyester, acrylic and other synthetic materials can provide warmth and softness similar to wool, but many are derived from fossil fuels and introduce different environmental challenges. Fashion therefore has to consider more than the question of whether a material comes from an animal.
The industry must also consider its carbon footprint, durability, waste, recyclability, land use and the conditions under which materials are produced.
This is where the wool debate becomes particularly complicated.
Textile Exchange argues that better sheep-farming systems can potentially improve soil health, biodiversity and land management while addressing animal welfare. The organisation encourages brands to consider certified wool and improvements in farming systems rather than treating the material as inherently unsustainable.
There is also a growing market for alternatives.
Brands and material innovators are experimenting with plant-based, recycled and bio-based fibres designed to reproduce some of wool’s qualities without relying on animals. Cotton, hemp, Tencel and other cellulose-based materials can already be used in clothing, while newer technologies are attempting to create next-generation fibres with lower environmental and animal-welfare concerns.
For fashion businesses, however, replacing an established material across an entire supply chain is not simple.
Wool has a long history in luxury fashion and remains particularly important in knitwear and outerwear. Designers also value its natural performance characteristics, including warmth, breathability and durability.
The economic dimension matters too.
A sudden ban could affect farmers, processors, manufacturers and other businesses connected to the wool supply chain. Any major transition would therefore require investment in alternative materials and new production systems rather than simply removing wool from clothing labels.
The current debate is also taking place at a time when fashion consumers are becoming more interested in knowing what their clothes are made from.
Labels such as organic, recycled, vegan, certified and responsible are becoming increasingly important in purchasing decisions. As consumers demand greater transparency, brands are under pressure to explain not only the materials in their products but also how those materials were produced.
For the fashion industry, the wool controversy could therefore become less about an immediate ban and more about accountability.
The question may not ultimately be whether all wool should disappear from fashion, but whether the industry can prove that the wool it uses meets credible standards for animal welfare, environmental responsibility and supply-chain transparency.
The debate is still developing.
What is clear is that wool can no longer be treated as an unquestioned sustainable material simply because it is natural. At the same time, replacing it with synthetic alternatives does not automatically solve fashion’s environmental problems.
As fashion continues to move away from fur and explore new generations of materials, wool could become one of the industry’s next major tests.
And the answer may depend not simply on whether fashion bans wool, but on whether it can build a supply chain in which animals, farmers, consumers and the environment are all considered part of the material’s true cost.
