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Faherty: These work shirts, or "shackets," might not exactly classify as flannels, but we think they're close enough in terms of material at the very least. And if not, they're a worthy substitute for the rudimentary Buffalo Check that pervades most people's closets. Faherty also has a line of true flannels.
The shirts are soft, flattering, and can be worn out and about in a slightly more elevated fashion than a Baja poncho. If busy patterns or stripes aren't your things, Faherty's shirts come in monochromatic colors, too. We're still a fan of these shirts, but a good bit of use has lead to pilling, and while choosing to dry clean them would prevent this, we think that's a little too much work for flannel. If you're willing to toss them into the dry cleaning pile, though, we're all for Faherty's work shirts.
L.L.Bean: A tried and true classic, this brand's shirts are known by all and worn by many, but the cuts tend to be frumpy and we think you can get better, more sustainably-sourced fabric for less.
Patagonia: Patagonia makes outstanding flannel, and it's also almost wholly sustainable, but it's a little pricier, and there are less solid colors to choose from if you're not into plaid.
Toad&Co.: We chose United By Blue over Toad&Co. as the best sustainable flannel because they use equally responsible materials and manufacturing processes, but also have more of a fashion forward style. However, as our previous pick for best sustainable, Toad&Co. is still a very solid choice.
Insider Reviews senior reporter Owen Burke said, "I received a Flannagan flannel shirt from Toad&Co. a little under a year ago, and I wore it all fall, winter, and spring, until it was time to break out the linen shirts. It suffered through countless washes in both my cheap-as-hell, garment-shredding washer and drier (no, really, they've killed many a shirt), and as I wear it today, there's not a loose thread, button, or stitch upon it."