Rens used a kickstarter fund to brew up their waterproof sneakers using old coffee grounds. It takes just over a cup of used coffee beans to make a pair of shoes.
Globally, we produce more than 23 million tons of coffee waste every year, which could make, well, lots of shoes.
"We actually realized that only five percent of the coffee waste in the world actually got recycled...We want to be a brand where we make sustainable products, but they are cool, they have really cool functions, people can actually use them," the company said.
Makers said wearing that waste is a fashionable way to help save the planet. The Finnish footwear company said it plans to use coffee grounds to create more wearable waste, including athletic clothes.
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