Americans throw away 25 billion Styrofoam coffee cups every year. An additional 23 billion paper coffee cups go to US landfills every year too.

This sounds like an admirable coffee habit, but the amount of waste produced by our cups is appalling.

Robert Knox saw it as a problem too. Setting out to minimize waste associated with coffee consumption, he developed a travel mug wrapped in cork called The Cortica. This mug, pronounced kor-T-sah for the Portuguese word for cork, holds 12 ounces of coffee in a porcelain base—to preserve your beverage’s flavors—and comes with an easily removable cork layer for insulating the drink. The lid, as you would expect from a socially conscious creator, is made of BPA-free plastic.

You may like your coffee black, but your soul isn’t black. Make your coffee habit a bit more eco-friendly.