![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_375/cms/2iZsRaFNyrk4qwM3KTs1y/29cfce2a65272cf8676ea9c5c0997d42/WR_BTF_Women_01_Mobile.png)
Wool Upper
Superfine And Cosy
It’s soft and itch-free on the inside, durable on the outside, and ethically sourced to ZQ Merino’s high standards for a cosy fit that treads light on the planet.
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_860/cms/4Gd5kyGjwMjCq1ycgIa2uN/f7f8125a859031d641d3f183db2f50b9/WR_BTF_Women_01.png)
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_375/cms/2kpROaxfJTv3MpCgauLa2e/dcab78c88d428ba7ea686afafd73140a/13_w375_h380px.jpg)
Sugarcane Midsole
Sweet On The Planet
Contoured and delightfully bouncy, our Brazilian sugarcane midsole is called SweetFoam®, which is made with the world’s first carbon negative green EVA.
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_860/cms/7CIuZxnMzpVQcueDqszjMe/f5f05b573779830d0a5d80ddad2d5e8e/13_w860_h557px.jpg)
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_375/cms/12iqJSTDIf3WpzwfZzP6eN/5cb8e2c91030df0f1237f82a0260c215/M_W_CastorBeanInsole.png)
Castor Bean Insole
Plant Your Feet In Comfort
We layered castor bean oil, which emits less carbon than petroleum-based foam, and ZQ Merino wool for a cushiony, moisture wicking, and odor reducing insole.
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_860/cms/6inJzHZB3XBDKZhYL3jrG1/67818f55997b078da3474691349c6a5d/insoles-right.jpg)
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_375/cms/1UHHNdoia2OPunCPWxqp4D/574fa483499ce90e1274c249b9d8c254/14_w375_h380px.jpg)
Recycled Laces
Loop And Swoop
Our laces are made from 100% post-consumer recycled polyester. One old plastic bottle becomes one pair of shoelaces.
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_860/cms/6aPQWUFJ6ZNp0POpBONUbb/1c97029b21c131fd1e4722ff57499344/14_w860_h557px.jpg)