Gamucci, an electronic cigarette maker, said it will open the world’s first airport “vaping zone” at London’s Heathrow this month.

The 322 square-foot indoor area will open on Nov. 25 at Heathrow’s Terminal 4 in the international departure lounge, Gamucci said in an emailed statement.

The company is the fastest-growing electronic cigarette brand in the U.K., it said in the statement, citing research by Neilsen.