If you’re looking for a pair of durable, high-performance, and stylish trail running shoes, you’re probably not thinking about shoes made from the same nature you plan on enjoying with them. You should be thinking about that because that’s exactly what natural fiber-focused brand Allbirds did with their new Trail Runners SWT. SWT as in “Sugar, Wool, Tree” uses a eucalyptus tree fiber and wool blend upper, a sugarcane midsole, and a natural rubber outsole, which means this trail runner really is made from nature, for nature. They knocked it out of the park with the sustainably engineered and intentionally designed silhouette that also happens to be quite stylish. As it’s their first-ever trail running shoe, they rigorously road-tested it to the tune of over 2,000 miles with 100 runners of all ages, abilities, and body types across every type of terrain to make sure they got it just right.