The Wm. Wrigley Jr. Company gave its Extra and Wrigley’s brands-Juicy Fruit, Doublemint, Big Red, Winterfresh and Wrigley’s Spearmint-a new look with a slim, 15-stick envelope package that is more durable and portable than the prior packaging. The brands represent 30 percent of the company’s overall gum business in the United States, said Bill Perez, Wrigley president and CEO. [Package design: Kaleidoscope]