Wool
Wool is a protein fiber grown from the fleece of sheep. It is one of the most versatile natural fibers, performing in both cold and warm conditions, and has been used in clothing for at least 10,000 years.
Where it comes from
Wool comes from sheep raised across New Zealand, Australia, the United States, and the United Kingdom. Shearing is done annually and does not harm the animal.
Properties
Microplastics
Wool is a natural protein fiber. It does not shed synthetic microplastics. Wool fibers that enter waterways biodegrade. Studies testing textile microfiber toxicity have confirmed that synthetic fibers — not natural ones — are the primary concern for aquatic organisms.
Certifications to look for
Wool brands in the directory
Every brand below has been verified to use natural fibers as their primary material.
Merino wool base layers and cotton outdoor clothing built for hiking, climbing, and running.
Danish-designed unisex wool knitwear rooted in maritime workwear, built around the classic sailor sweater.
Moroccan artisan cooperative of 600+ weavers making hand-woven wool and natural fiber goods.
Premium Australian natural fiber and wool rugs for the home.
Handcrafted wool, jute, and natural fiber rugs made ethically for the home, by an Australian B Corp.
German casual and denim brand in organic cotton, linen, and wool for men, women, and kids.
European-made timeless basics in natural fibers for men and women with full supply chain transparency.
High-end Danish basics in organic cotton, wool, wild silk, linen, and hemp — full natural fiber range.
B Corp women's clothing brand using natural and organic fibers, one of the UK's highest B Corp scorers.
Chunky-knit weighted blankets and sleep accessories made from organic cotton and natural fibers for home wellness.