Sizing varies among our shoe styles, but all of our shoes are medium width and most are full sizes only. Please note that we now include half sizes in our Wool Runner 2!The Wool collection starts out a little snug and then stretches naturally, while the Tree, Canvas, and Plant Leather materials are super accommodating, but will fit similarly over time as they retain their shape.We've found most full-size customers stick with their full size in all materials. If you're a half size, we've found most customers size up in every silhouette. If you have a wider foot and you're a half size, we'd suggest sizing up to the next full size in everything.Our socks, undies and apparel should run true to size. There are also sizing charts on the product pages to help out!Still not sure? We'd love to talk to you about it. Reach out to one of our fit specialists at help@allbirds.com for some personalized advice!

Great question! If your Wool shoes are a bit snug to start, you can expect them to stretch about a quarter inch after a few weeks of wear. In contrast, your Tree, Canvas, and Plant Leather shoes will likely retain their original shape. Either way, we recommend wearing them for 1-2 weeks to break in. Pro tip: trying them with socks can also help the shoes break in more easily!And just so you know, we do provide a 30-day trial period if you’d like to give them a whirl!

Our padded insole is made from a castor bean oil blend with a wool or tencel lining topper. This cushioned insert has very noticeable arch support compared to minimalist shoes. Everyone’s feet are different and we’ve heard from many flat-footed customers who find comfort in their Allbirds :)The Runner style has about a 9.6mm heel-to-toe drop, which means it has a bit larger arch in comparison to the Lounger, Piper, Skipper, and Breezers, which have about a 2mm drop. Our Dashers have a 7mm drop with medium contoured arch support built in.For customers looking to use their own inserts or orthotics, our insole is easily removable to make these adjustments. However, some customers have noticed that they do not need to use their orthotics given the level of cushion, so it's worth a try!

Not quite, but our Mizzle Collection offers a few extra-special features that make them a perfect option when the weather report is less than ideal.The Wool Runner Mizzles, Runner-up Mizzles, Runner-up Mizzle Plus and Dasher Mizzles are all treated with a fluorine-free, water-repellent coating that helps water bead up and roll off the surface of the shoe, keeping your feet cozy and dry. Also, we've added an ultra-thin Bio TPU membrane layered between the wool upper and the interior of the shoe to prevent water seepage. The SweetFoam™ soles on the Mizzle collection have been reinforced with responsibly sourced natural rubber trackpads, for extra grip to navigate through any unexpected rainstorm or snowball fight!In terms of our classic collections, Merino wool has a natural waxy ingredient called lanolin that creates a water-resistant coating on each fiber. The Wool shoes can definitely sustain a light rain and still keep your feet dry and insulated. Our Tree Collection is made from Tencel, which loves to absorb water. Your Tree shoes can also handle a light drizzle, but for heavy downpours, we would definitely recommend leaving them at home.Long story short, if you're looking for an all-around rain shoe, we'd go with the Mizzles :)

Our insoles can be washed by hand, and shouldn't be washed in the machine. We find that hand-washing will help preserve the longevity of your Allbirds insoles. I sometimes think of the shoes and insoles as a wool sweater - can be washed, but over-washing can affect structure and lifespan.For hand-washing, we typically suggest applying a small amount of gentle detergent to the top, woolen part of the insole. You can rinse the detergent off in lukewarm or cold water. To target the odor of the insoles, we recommend putting a few drops of tea tree or eucalyptus oil and a bit of gentle detergent in a bowl of lukewarm water. You can then wet the tops of the insoles with this oil and water mixture. Rinse with lukewarm or cold water.And last, but certainly not least, be sure to let the insoles air dry!If you want to revamp the pep in your step, you can purchase a new pair of insoles here:Women’s InsolesMen’s InsolesJust match your insole size to your shoe size.

If your shoes start to feel a little less than fresh, throw them in the washing machine on the wool or gentle cycle. But first, be sure to remove the insoles and laces. For the best results, use your favorite gentle detergent and a delicates bag.To preserve the fluorine-free water-repellent treatment on the wool upper, we recommend hand washing the shoes in our Mizzle collection. Spot cleaning dirt with warm water and gentle soap is the best but if they need a deep clean, machine washing is still okay.Don’t forget to air dry your shoes just like in the good ol' days—and whatever you do, avoid the dryer and bleach at all costs! For more information about shoe care, check outtheseinstructions.For your socks & undies, you can toss them in the washing machine and set it to cold with your favorite mild detergent. When they’re done, you can tumble dry low or air dry. Wearer’s choice. But be sure to avoid the iron, dry cleaning, and bleach to keep them looking good. Our Apparel has varying instructions based on the garment, but there's a cheat-sheet under "Care Guide" on your product's page.If you have other questions about how to care for any Allbirds product, feel free to reach out to a product specialist at help@allbirds.com.

We're proud of the responsible approach we take to manufacturing with minimal environmental impact. By offering a carefully curated product range, we’re able to maintain a small, tight-knit supply chain. We have only a handful of finished good factories, many of whom we’ve worked with for years. In addition, we accept third-party, mutually recognized standards, like WRAP and SMETA, to reduce audit fatigue at factories and ensure safe, lawful, human and ethical manufacturing practices.Footwear:

• South Korea - Our shoes are hand-assembled in Busan, South Korea, which at one time had the nickname of “Shoe City.”
• China - Our partners work out of a China-based factory in Shenzhen, where knitting and hand-assembly takes place. This factory is WRAP certified, and they pride themselves on being one of the nation's most innovative producers.

Apparel:

• North Carolina - We partnered with a manufacturing team in North Carolina who have been making world-class socks for over 100 years!
• Peru - Our team here offers environmental education and training programs for workers, covering topics like how to practice sustainability at work and at home.
• Indonesia - We partake in the ILO Better Work Initiative, which aligns factory practices to local laws and the UN International Labor Organization's standards. The annual program includes advisory and consulting services and management training.
• Vietnam - Our factory here is LEED Certified, built for energy efficiency with rainwater capture and reuse, and green space for native plants.
• China - Our partner in China who knits our sweaters makes sure nothing goes to waste, recycling all excess yarn to be used again.
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We're proud of the responsible approach we take to manufacturing with minimal environmental impact. By offering a carefully curated product range, we’re able to maintain a relatively small, tight-knit supply chain. We have only a handful of finished good factories, many of whom we’ve worked with for years. In addition, we accept third-party, mutually recognized standards, like WRAP and SMETA, to reduce audit fatigue at factories and ensure safe, lawful, human and ethical manufacturing practices.To see our full list of Tier 1 (finished goods) manufacturers and subcontractors, click here. We will continue to update and expand on this list to account for additional supply chain Tiers annually.

The Allbirds