Reusable cooling pack with intelligent fill system — reliable, easy-to-use cold retention for coolers, transport, and air-cooler applications Key benefits — why you need this Long-lasting cold: High heat-storage capacity and coarse-crystal technology deliver strong cold retention so contents stay chilled across multiple uses without performance loss. Safe to fill and freeze: Container-friendly filling guide with built-in overfill protection prevents spills and ensures even water distribution during freezing. Handles expansion safely: Designed expansion joint accommodates hydration-related volume changes during freezing, maintaining seal integrity and reliable function. Ready and convenient: Modern cooling-crystal technology makes the pack easy to activate and prepare for use; compatible with standard cool boxes and portable air-coolers. What makes it stand out Intelligent filling guidance and overfill protection for safe, consistent freezing every time. Expansion joint engineered for the volume increase that occurs during hydration and freezing — reduces risk of leaks and extends product life. Coarse-crystal cooling structure and high thermal capacity provide reusable, dependable cooling performance without frequent replacement. Key functions and compatibility Function: reusable cold pack that chills and holds temperature for transport and storage of perishables and sensitive items. Compatibility: fits standard travel coolers, insulated boxes, and works effectively with portable air-cooler systems. Performance: designed for repeated freeze/thaw cycles with sustained cooling power and minimal degradation. Practical use scenarios Camping and road trips: Keep food and beverages safely chilled in portable coolers during multi-day outings. Breast milk and medication transport: Maintain required cold conditions for expressed breast milk and temperature-sensitive medicines while traveling. Everyday cooling and air-cooler support: Place in insulated boxes or near portable air-coolers to extend cooling time and reduce compressor cycles. Simple handling notes Fill following the container-friendly guide; the overfill protection prevents excess liquid. Freeze and use as needed — activation is straightforward with the cooling-crystal technology. Designed for repeated use; coarse-crystal structure and thermal mass retain performance over many cycles. Reliable, practical cooling that combines safe filling, expansion accommodation, and strong cold-holding capacity for travel, transport, and cooler applications.