Space-saving design: lightweight, compact form fits easily in any backpack. Ideal for outdoor use, travel, and daily commuting. Durable performance: optimized material thickness reduces breakage, increasing durability and providing a consistent cooling function for repeated use in food containers. Practical versatility: easy integration into cold-chain logistics and fan-assisted cooling systems. Suitable for breast milk storage and food cooling. Reliable cooling effect and straightforward handling support a wide range of applications. Intense cooling effect: expandable granules enable robust cooling preservation, keeping meals and drinks at the ideal temperature. Common uses: - Outdoor adventures, hiking, camping, and picnics where compact cooling is needed without bulk. - Everyday meals and breast milk storage in lunchboxes and on-the-go feeding. - Integration with refrigerated transport, kitchen cooling setups, or fan-assisted cooling systems for reliable temperature control.