LongLasting Cooling Power: Reusable freezer packs with thickened PE layers and solidification to 12 C provide extended cooling. They are suitable for keeping drinks, breast milk, or perishable food cold during outdoor trips, at home, or in medical transport Wide Application Scope: Suitable for air cooler units, camping trips, lunchboxes, BBQs, and selfdriving tours. These ice packs support breast milk preservation, food safety, and nursing care while remaining compact and convenient for daily use OneTime Fill System: Add water once and use these packs repeatedly without refilling. This design is more efficient and ecofriendly than alternatives while delivering consistent performance for freezer and travel needs Flexible Size Options: Available in ultrasmall to large sizes (1001000 ML capacity). These freezer bricks adapt to different storage needs, whether packing a small lunch, cooling a picnic cooler, or enhancing your portable air conditioner Use scenarios Outdoor trips and camping: Keep beverages and perishable foods cold in coolers, support breast milk preservation during travel, and manage temperature for medical transport Daily use and nursing care: Pack in lunchboxes to maintain food safety and freshness; assist in nursing care by keeping breast milk cool during daytoday activities Portable cooling and supplementary cooling needs: Use with portable air conditioners or cooling devices to augment overall cooling performance during travel or in temporary setups