Courtesy Unless Collective
- Eric Liedtke cofounded Unless Collective and released a biodegradable sneaker late last year.
- Liedtke, a former Adidas executive, said the sneaker solves one of the hardest problems in footwear.
- An analyst called the sneaker a "game changer" given the industry's addiction to plastic.
Athletic footwear is inherently tough on the environment. Most sneakers are made with pollutants, including plastics and toxic glues.