We 💛 Cozy Plaid Flannels

Flannel shirts aren’t just a fall trend. The style transcends seasons, and it’s easy to see why: These shirts are effortlessly cool, rugged, and comfortable. Flannels work anytime, anyplace. 

That’s why this winter (and beyond), we’re stocking up on sustainable flannel shirts from our favorite brands. These shirts are created with eco-friendly materials like organic cotton, linen, and even fabric sourced made from recycled plastic bottles. Consider this shirt a sustainable staple for your wardrobe and a perfect pairing with your favorite American-made denim and ethical boots

For secondhand flannels that are affordable, size-inclusive, and truly sustainable (because reuse is the new recycle!), check out Vintage Vanguard Co and Flannel Factory Vintage on Etsy.


1. United By Blue

Sustainable Materials | Organic cotton, recycled polyester
Our Pick | The Responsible Flannel
Size Range | XS–XL
Price Range | $78+

United by Blue, a sustainable and ethical apparel brand for all genders, removes a pound of trash for every product sold—and to date, they’ve removed nearly 3.5 million pounds of waste. As a certified B Corp, the brand also has a zero-plastic policy and works with only eco-friendly materials, such as hemp and Modal. We love the super soft Responsible Flannel. It’s a cozy essential you’ll never want to take off.

Shop United by Blue Flannels


2. Outerknown

Sustainable Materials | Organic cotton
Our Pick | Costa Double Weave
Size Range | XS–XL
Price Range | $88+

Heading outdoors soon? Check out Outerknown’s flannels, which are sewn in safe, fair working conditions, sourced from eco-friendly or recycled materials, and made to last. The Costa Double Weave flannel, in particular, is the perfect athleisure or hiking top, designed with a relaxed fit and coastal vibe. Plus, you’ll stay warm between two layers of 100 percent organic cotton. There’s a reason Outerknown’s flannels are best-sellers, with hundreds of positive reviews.

Shop Outerknown Flannels


3. Patagonia

Sustainable Materials | Organic cotton
Our Pick | Fjord Flannel
Size Range | XS–XXL
Price Range | $79+

Patagonia, a long-time sustainability leader, invites you to adventure and explore outside this season. The brand offers sustainable flannel shirts with dozens of color options and sizes up to XXL, and each one is ethically made with organic cotton. As the first certified B Corp in California, Patagonia donates one percent of proceeds to environmental initiatives worldwide, so we can both admire and preserve nature.

Shop Patagonia Flannels 


4. Portuguese Flannel

Sustainable Materials | Cotton, plastic-free buttons
Our Pick | Bergundi Shirt
Size Range | XS–XXL
Price Range | €88+

Crafting its clothes in northern Portugal, Portuguese Flannel draws inspiration from the local coast and mountains to create its classic and timeless styles, including the heavyweight flannels. Even the buttons on these relaxed-fitting flannels are sourced from plastic-free materials. International shipping available. 

Shop Portuguese Flannel


5. tentree

Sustainable Materials | Organic cotton
Our Pick | Lush Flannel
Size Range | XS–XL
Price Range | $68+

This certified B Corp puts the Earth first; tentree plants 10 trees with every purchase with more than 48,000,000 already rooted worldwide. (You can track your impact to see where your trees have been planted.) Here you’ll find sustainable flannels for all genders, which are thoughtfully designed in Canada and ethically made in China. In the process, over 300 liters of water are saved per shirt.

Shop tentree Flannels


6. Faherty

Sustainable Materials | TENCEL, linen, and cotton
Our Pick | Malibu Shirt
Size Range | XS–XL
Price Range | $128+

Two twin brothers lead family-run brand Faherty, and their commitment to sustainability and style is unparalleled. Most of Faherty’s flannels are crafted with an organic cotton, linen, and Tencel blend and brushed for softness, so the shirts are simultaneously soft and sturdy. Faherty’s flannels are designed to fit your lifestyle seamlessly, whether you’re at work, out for a walk, or at home.

Shop Faherty Flannels


7. Toad & Co

Sustainable Materials | Recycled cotton and polyester
Our Pick | Reform Flannel
Size Range | XS–XL
Price Range | $80+

Toad & Co is redefining what it means to be sustainable. The team takes recycled cotton and old plastic water bottles and turns them into innovative fabrics like “Re-Form twill”—the same material used in the brand’s cozy flannels. A portion of your order will also benefit 1% for the Planet, investing in environmental causes.

Shop Toad & Co Flannels


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