- Durable cooling pack for versatile cooling needs: keeps foods, drinks and perishable items cold for hours – ideal for breast milk storage, kitchen meal prep, picnics or travel in cars, RVs and beach coolers - Reusable freezing bag with high cooling efficiency: filled with dry ice crystal particles or gel – expands as it freezes to maximize cold retention and remains leak-proof - Durable and leak-proof PE shell construction: thickened PE or nylon-reinforced material resists punctures and withstands repeated freezing cycles for long-term use - Compact and easy-to-use design: add water once, freeze 2-4 hours and reuse indefinitely – fits perfectly in lunch bags, thermo- or insulated coolers - Use cases: - Breast milk storage for day trips or outings - Lunch bag or meal-prep cooling to keep perishables fresh - Outdoor activities and travel such as picnics, road trips, camping, RV travel or beach days