As promised, Allbirds has expanded outside the footwear space, launching with a four-piece collection in apparel. Just last month, Allbirds raised $100 million in a Series E funding round and noted the money would go toward new product categories in addition to international and brick-and-mortar expansion.

This move outside of its core footwear category comes just a few months after the brand debuted its first performance running shoe, stepping outside of the casual footwear space for the first time, and fits with a sustainable vision for the future of fashion: better materials, carbon-neutral products, less required washing, and items focused on form and function.

“From the start, we knew that our vision of evolved environmentalism was broader than just shoes,” the company said in its announcement. “And as the chasm between disposable fast fashion and utilitarian basics has grown, the fashion industry has clung to the same outdated methods that continue to drive excessive carbon emissions, soil depletion, and synthetic waste. So we asked ourselves, why couldn’t we give people clothes they’ll love and simply make them better?”