Before being bought by Starbucks last year, Teavana had primarily been known for retail shops that sold tea and supplies — but didnt serve the drink. With the tea bar concept, Starbucks had to rethink some of the most basic elements of its successful formula for a different kind of customer — including the paper cup itself. FastCoDesign takes a look at the result of Starbucks design efforts. Double-walled insulation was built into the cup itself, foregoing the need for the cheap cardboard sleeves Starbucks customers (and coffee drinkers everywhere) need to deal with.