Allbirds SWT Trail Running Shoes

Having made a name for themselves with merino wool-based everyday sneakers, Allbirds is getting into the trail running game with the SWT. Tested over 2,000 miles with 100 runners of all ages and abilities, it has a ripstop upper made from TENCEL Lyocell (eucalyptus tree fiber), merino wool, and recycled polyester with an external heel counter for stability. The comfy SweetFoam midsole is made with sugarcane-based green EVA, while the FSC-certified natural rubber outsole has prominent tread for traction on any surface.

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