A Japanese beer maker is using upcycling technology to turn waste from the brewing process into blue jeans.
The by-products of beer can be turned into clothing, according to a report.
In order to create the special jeans, the beer company collaborated with a denim company in the southern part of Japan.
The jeans were created by first turning the lees into a Japanese style paper.
The washi is used to spin yarn that is then woven into denim, with the finished product described as being light and airy.
The lees from the dark beer were used to highlight the company's Black label brand.
When the first 30 pairs of the pants were added to the online store, 1,600 people tried to buy them.
The company was surprised that so many people were interested in buying the jeans, according to Shinnosuke Araki.
Beer sales fell for all four of Japan's major breweries because of the swine flu. The company was able to explore a new revenue stream and build a following for its Black Label beer brand by using upcycling technology to give new life to waste products.
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