illy is an Italian brand known for their high end coffee and espresso machines.  They have a number of cafes mainly on the West and East Coasts of the United States.  I am not a fan of their iced tea.  It is fresh brewed, but it has a floral and tropical taste that I could do without.  A large was $3.25 at the San Francisco location which I visited and there are no refills.  For that price, I would advise getting an iced tea at a nearby Starbucks.