Futoflask lies flat in your bag. It's a reusable double layered flask. Inner layer made of heat resistant flexible plastic and the outer layer is an airtight waterproof textile. Other option is monomaterial flexible cup. There is a 5 mm space in between layers. Layers attached to each other air tight and the valve placed in the outer layer. Before use flask inflated through the valve. This helps to hold a flask and also protect consumer from direct contact with hot / cold beverage. Beverage sipped from the flask from the small mouthpiece mimicking the straw. When drink furnished Futoflask is deflated and placed back in the bag taking close to nothing space. Inner layer is liquid repellent to make cleaning easy. Cleaning and filling the cup is done by zip locked opening in the top of the flask.
The design address the two main flaws of reusable coffee cups - 1) they take too much space - futoflask will take a bit more than a handkerchief what is ok with the smallest of bags or a pocket 2) the cups that take little space do not provide the same experience of holding the cup - futoflask inflatable walls act both as a thermos and mimic shape of the cup.
Futoflask is also provided with personalised barcode which can be scanned with every purchase to give you a discount points and also helps to track the amount of waste avoided by you personally and by Futoflask community together. The cafe also gives discount for serving drinks in the barcoded Futoflask.