theme coffee cups are uneconomical , takingdecadesto expose down in a landfill after they ’re used for just a pocket-sized part of someone ’s morning . But they ’re also overwhelmingly convenient to many . A new inauguration calledVessel Worksis aiming to harness the waste material job at coffee berry shops by applying the convenience of disposable to - go cup to reclaimable countenance , Fast Companyreports .

The program , which is launching in four Boulder , Colorado coffeehouse , takes the pressure off of customers to leave their own reusable cups . Instead , they can download an app and apply it to watch out an insulated , stainless steel mug free of charge . Throughout the day , the app updates them on ways their choice has made a departure , including how much wastefulness they ’ve preclude , how much water they ’ve conserve , and how much they ’ve reduce their carbon footprint . When they ’re done with the drink , users have five days to turn back their smiler to a Vessel kiosk ; from there it will be cleaned in one of the startup ’s facility and reelect to a cafe where the cycle per second will set forth all over again .

Vessel is n’t the first company to attempt to fetch reusable cup into the share-out economy . In 2016 , coffee shops inHamburg , Germanyadopted a program where customers could get a sucker for a small sedimentation and return it to a participating cafe to get their money back . Vessel Works ’s program differs in that users are never asked to make up unless they fail to return their cup on time ( in that case , they ’ll be charge a fee ) .

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Vessel is currentlyworkingwith Boxcar Coffee Roasters and Trident Booksellers and Cafe in Boulder , and is coming presently to Seeds Library Cafe at the Boulder Public Library and the Pekoe Sip House at the University of Colorado . The startup hopes to finally flesh out to more coffee bar and install dropoff booth at more convenient locating like transit stop .

[ h / tFast Company ]