LONDON — When Allbirds founders Tim Brown and Joey Zwillinger launched the footwear brand in 2016, they wanted to make a simple-looking shoe that was logo-free. They started with a sneaker that had a wool upper, and ads claimed they were the “world’s most comfortable” shoes.
Their sneakers soon became the go-to footwear of Silicon Valley executives, but they had another mission beyond being fashionable: they wanted to be environmentally-friendly. However, using a sustainability message in marketing at the time wasn’t necessarily the sexiest selling point, explained Allbirds’ sustainability lead Hana Kajimura.
“From the very beginning, Tim and Joey (felt that) getting our product out into…