A surge in demand for World Cup stickers has overwhelmed Panini. The company's products are selling out quickly, emptying newsstands and drawing crowds to public spaces. The director general of Panini España, Lluís Torrent, acknowledges that the success of the sticker collection has been a surprise to everyone.

He describes it as a "boom" that has exceeded expectations. Further details about the phenomenon are available from El País, which has reported on the story. For more information, readers can consult the original article, which provides additional context and insights into the popularity of the World Cup stickers.