Chill-Boosting Technology: Maximize the potential of your air cooler with cold-supplied additives designed for excellent cold operation and compatibility with evaporation cooling systems in repeated applications. Durable cooling performance: Features high-capacity thermal retention and coarse crystal technology that provide long-lasting reusable cooling performance and even results. Efficient hydration adjustment: Includes a container-safe fill guide and non-overfilled instructions to manage water-absorbing expansion, ensuring proper freezing-phase adjustment while supporting hydration-driven volume increase through a thoughtfully designed expansion-allowance mechanism and improved efficiency. Wide usage spectrum: A versatile thermal management tool designed to be safe for storing food and breast milk, and compatible with camping, travel fridges, and air cooler uses. Use scenarios: - Camping and outdoor trips: Keeps perishables and beverages cool without electricity. - Road trips and travel: Maintains safe temperatures in portable travel fridges or vehicle coolers during long journeys. - On-the-go baby care: Safe storage for breast milk and baby foods during errands or travel.