10 Sustainable Sweater Brands

Looking to cozy up your wardrobe for fall and winter? You can do it more sustainably. Instead of buying new sweaters, try shopping secondhand from your local thrift store or online secondhand sites like Depop or thredUP.

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If you prefer buying new, opt for brands that are ethical and sustainable, and use fair trade production practices. Here are six sustainable sweater brands that stand out:

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Fjallraven

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Fjallraven offers a versatile range of functional sweaters for men and women — from reliable warmth in variable conditions to comfortable everyday layering. The brand provides paid repair options, including in-store repair and shared repair guides. It also offers a lifetime warranty for manufacturer defects and runs a take-back program called Fjallraven Pre-Loved.

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Tentree

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Tentree’s sweaters use materials like organic cotton, grown without synthetic chemicals, and modal, made from beech wood fibers through a low-impact process. They also incorporate recycled polyester buttons. Tentree has been Climate Neutral certified since 2020 and a Certified B Corp since 2016. Tentree also reduces plastic in packaging by using organic cotton string instead of plastic tag fasteners and eliminating poly bags for 85-90% of products. Their mailers are made from 100% post-consumer recycled plastic.

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MATE the Label

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MATE the Label makes their sustainable sweaters in a Fair Trade factory in Peru using 100% organic, locally-grown cotton. Founded and run by women, the brand focuses on inclusive and sustainable fashion for every stage of a woman's life. Their other products, which include activewear, loungewear, and everyday clothing, are also crafted from non-toxic, natural, and organic fabrics. MATE holds certifications like Climate Neutral, GOTS, and Certified B Corp, demonstrating their commitment to sustainable and socially responsible practices.

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Lucy & Yak

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The sweaters from Lucy & Yak are made from 100% GOTS-certified organic cotton jerseys, making them super soft and breathable. The brand combines a unique design with a strong environmental focus. Customers can trade in old items for recycling or resale. Certified by the Global Recycled Standard and the Global Organic Textile Standard, their other products also use biodegradable organic cotton, GRS recycled polyester from plastic bottles, deadstock fabrics, and organic hemp.

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Kowtow

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Kowtow's sweaters are made from 100% Fairtrade organic cotton, grown from non-GMO seeds without harmful chemicals. Their garments are plastic-free and designed for circularity, with complete seed-to-garment traceability. Labels and tags are made from recycled and organic materials, using GOTS-approved inks and dyes. As a certified B Corporation since 2006, Kowtow focuses on circular design and transparency, sharing its progress in bi-annual impact reports.

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Reformation

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Reformation's fine-gauge recycled cashmere blend sweater is made from 90% recycled cashmere and 10% cashmere. This blend uses repurposed cashmere clippings and knitwear that feel like conventional cashmere. On average, 1 kg of recycled cashmere has 70% less environmental impact as compared to virgin cashmere. Reformation is Climate Neutral Certified, Their RefRecyclable program promotes reusing, reselling, and recycling, reinforcing the brand's commitment to sustainable fashion.

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Outerknown

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Outerknown uses a majority (~95%) low low-impact materials in its garments, and it’s no different for its range of slim fit and classic fit sweaters for women and men. These sweaters are primarily made from materials like organic cotton, recycled cotton, recycled polyester, and recycled cashmere. The brand also runs a resale program and uses plastic-free packaging for its products.

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Everlane

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Everlane offers over 200 styles of women's sweaters, from crew necks to half-zips, in fabrics ranging from cashmere to cotton. The brand uses low-impact fibers like organic cotton, RWS-certified wool, and GRS-certified recycled cashmere, though some styles include higher-impact materials like viscose. You can easily filter by low-impact fabrics. Everlane has reduced plastic in its packaging, using sustainable alternatives like FSC-certified materials and 100% recycled paper stock.

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Toad&Co

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Toad&Co offers a limited range of men's sweaters but an extensive selection for women. The brand uses low-emission materials like recycled cotton, organic cotton, hemp, 100% recycled polyester, and Tencel lyocell. All packaging is 100% plastic-free, featuring eco-friendly options like reusable LimeLoop mailers and FSC-certified paper mailers. The brand also runs ToadAgain, a take-back program that accepts its clothing for resale.

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