Starting with the introduction of its BK Chicken Fries product in 2005, BK began adapting some of its product packaging so that it could be placed in an automotive cup holder. The BK Chicken Fry box, while square in shape, will sit comfortably in the cup holder and its top, when opened, forms a small tray that is designed to hold dipping sauce. Burger King credits the design of this box with helping to make its Chicken Fries the most popular adult-oriented chicken product in the United States. It has since added a trademarked and patented round French fry container which it calls the "FryPod", which is a paper cup made from 50 percent recycled materials that is designed to fit in an automotive cup holder. The package design won an honorable mention at a packaging industry design competition. BK's large and King sized beverage containers are made from molded HDPE plastic with a funnel-like shaped bottom that allows the oversized cups to fit in cup holders.