![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_375/cms/7ng0gS7BePv2hq2fdUFBpu/c06416edcb1f2ac6faeff68f9c3c4243/underwear-macro_1125x1143.jpg)
Trino® Material
Our Breezy Super-Yarn
We combined eucalyptus fiber and merino to invent a soft, moisture wicking material your private parts and the planet will love.
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Natural Breathability
Next-To-Skin Comfort
Crafted with premium natural materials, our silky-smooth underwear stays so dry and fresh throughout the day, it's like going au naturel.
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_860/cms/3zSNQbGhPxz5ukC6GIdclL/35dca379d18a67324ef0ec3d5800aa0d/briefs_.jpg)
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New Possibilities
A Natural Evolution
Having come a long way with sustainable natural materials, we decided to take their soft and breezy feel to new heights.
![](http://cdn.allbirds.com/image/upload/f_auto,q_auto,w_860/cms/XPVzp3ZeLK2VOnPRvdPa0/f9109d9de77501e94d22c14a3e4bcdf4/Desktop-3.jpg)