Mars Drinks has relaunched Galaxy and Bounty flavoured milk drinks in new 250ml bottles, replacing the old 230ml cartons.
According to research 80% of customers preferred the new format.
Galaxy is said to be the fifth best-selling flavoured milk brand. Bounty, meanwhile, is a relative newcomer, launched less than a year ago.
Both drinks are long life, but should be displayed in the chiller for maximum sales. Distribution is through Jenks Food Brokers.