The SEALED (2) 6-Pack Box Cirkul ACCEL Cartridge Electrolytes contains 12 individual Cirkul Accel Rehydration Accelerator cartridges, each with a volume of 4.08 FL OZ. These electrolyte cartridges are designed to be used with the Cirkul Accel Energy & Fitness Drink, providing rehydration and energy boost without any artificial flavors, colors, or caffeine. Made in the United States, these low-carbohydrate, sugar-free cartridges are perfect for those looking to replenish their essential nutrients and minerals without any negative side effects.