Allbirds built its brand on sustainability, from merino-wool runners to a carbon label on every product. The materials story checks out; the open questions are durability and whether comfortable natural shoes can ever be low-impact.
- Certified B Corp since 2016
- First fashion brand to label 100% of products with their carbon footprint
- Natural, lower-impact materials: merino wool, eucalyptus tree fiber, sugarcane-based foam
- ‘Flight Plan’ commits to halving then near-zeroing its carbon footprint by 2030
- Generally recyclable/biodegradable-leaning material choices
- Durability complaints, some find soles and uppers wear faster than hoped
- Shoes are inherently hard to recycle (mixed materials)
- As a public company it’s faced financial pressure that can strain sustainability investment
- Replacing worn shoes often offsets some material gains
Related: see our roundup of the best sustainable sneakers.
What Is Allbirds?
Allbirds is a footwear and apparel brand that made natural materials its identity, wool runners, eucalyptus-fiber uppers, and a sugarcane-based foam sole (‘SweetFoam’). It’s been a B Corp since 2016.
The Carbon Label
Allbirds’ signature move is transparency: in 2020 it became the first fashion brand to print a carbon footprint on every product, like a nutrition label. Its ‘Flight Plan’ sets concrete targets to cut that footprint in half and approach net zero by 2030, a level of measurement most brands avoid.
The Durability Question
The honest knock on Allbirds is longevity: some owners report soles and wool uppers wearing faster than premium-priced shoes should. Since the most sustainable shoe is the one you don’t replace, durability matters as much as materials. Allbirds is a better-than-average choice, just buy with care and keep them in rotation as long as possible.
The materials, decoded
Allbirds’ product names are literal. The Wool Runners use ZQ-certified merino. The Tree line is knit from eucalyptus-pulp fiber, which sips water compared to cotton. The soles across the range are SweetFoam, a foam made from sugarcane that the company open-sourced so competitors could use it too, an unusually un-possessive move for a flagship technology.
Every shoe also wears its carbon footprint as a printed number, like a nutrition label for emissions. The figures are self-reported, but publishing a per-product number at all invites scrutiny most brands avoid.
How they hold up
Honesty requires the durability conversation. The knit uppers that make Tree Runners feel like socks also wear faster than leather or heavy canvas, and hard daily use can show in the heel and toe within a year. Owners who rotate two pairs report far better lifespans, and the machine-washability keeps them looking newer than most sneakers their age.
A shoe that wears out faster carries a sustainability cost no material story erases, and it is why the score here is a 4.3 rather than something higher. Where they rank against sturdier rivals is in our sustainable sneaker roundup.
The Verdict: Is Allbirds Sustainable?
Allbirds is one of the more sustainable shoe brands, a B Corp using natural materials and the first to carbon-label every product, though durability complaints and the simple fact that shoes wear out temper the eco win.
Frequently Asked Questions
Is Allbirds a B Corp?
Yes, Allbirds has been a Certified B Corporation since 2016, reflecting a verified commitment to social and environmental standards.
What are Allbirds shoes made of?
Allbirds uses natural and renewable materials: merino wool, eucalyptus tree fiber (Tencel-style), and a sugarcane-derived foam called SweetFoam, chosen for their lower carbon footprint versus synthetic alternatives.
Are Allbirds actually sustainable?
More than most shoe brands, they’re a B Corp, use natural materials, and carbon-label every product. The knocks against it are durability complaints and the fact that all footwear has a footprint and is hard to recycle.
Do Allbirds wear out quickly?
Some customers report the soles and wool uppers wearing faster than expected. Because keeping shoes longer is the most sustainable choice, it’s worth rotating pairs and caring for them to extend their life.
Can you machine wash Allbirds?
Yes. Remove the insoles and laces, run a cold gentle cycle, and air dry. It’s one of the few sneakers designed for the washing machine, which goes a long way toward keeping them in service longer.
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Sources & Further Reading
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