They clearly like a coffee over at Californian sports clothing company Virus. While its employees might order a mocha latte, the company is interested in the grinds. Virus' StayWarm line uses what it calls Coffee Char, or coffee charcoal in the construction of the fabric. The grounds are recycled and processed into a natural fiber to produce a comfortable base layer fabric that traps heat close to the skin.
Read the full article: Keeping warm with recycled coffee beans