Tree Runners are machine-washable, carbon neutral, and breathable. The upper on the Tree Runners are made with Tencel, which is created from Eucalyptus trees. They are incredibly comfortable and great during warm temperatures, as they are extremely breathable and light. You can also wear them without socks!
Sustainable Materials:
-FSC-certified TENCEL™ Lyocell (eucalyptus tree fiber) upper
-SweetFoam® midsole made with sugarcane-based green EVA
-Bio-based TPU eyelets
-Shoe laces made from recycled plastic bottles
-Castor bean oil-based insole foam
-ZQ merino wool heel lining
Allbirds Size Chart
Allbirds fit true to size for most customers. If you have wide feet or are between sizes, we suggest you size up.
Did you know that our shoes are actually unisex? You can easily cross over to find shoes in your size.
Here’s how it works:
If you wear a men’s size 7, try a women’s size 8 or 9.
If you wear a women’s size 12, try a men’s size 10 or 11.