Flavor capsules in cigarette filters are a product design innovation that allows consumers to crush a liquid-filled capsule that flavors the cigarette smoke. Most capsules include menthol flavorings. The top five countries with the highest market share for flavor capsule cigarettes are in the Latin American region: Chile, Peru, Guatemala, Mexico and Argentina.
Citation: Thrasher JF, Islam F, Barnoya J, Mejia R, Valenzuela MT, Chaloupka FJ. Market share for flavour capsule cigarettes is quickly growing, especially in Latin America. Tob Control. 2016 Jun 21. pii: tobaccocontrol-2016-053030.