- Guaranteed Durability: Made from thickened PE material, these cooling packs offer exceptional break resistance, ensuring long-lasting durability and reliable performance for repeated use in lunch boxes. - Convenient Portability: With a compact design and lightweight construction, these packs easily fit into any bag, providing a practical solution for transporting cooling power wherever you go. - Easy to Use: Simply add water to allow the ice crystal particles to expand, then freeze the pack for 2-4 hours. This method ensures a convenient and effective way to maintain the cold in your lunch container throughout the day. - Versatile Applications: Ideal for preserving breast milk, cooling food, and more, this product is suitable for a wide range of uses, including cool transport and cooling support for air conditioning fans. It meets diverse needs with reliable functionality and broad compatibility. Key Attributes: - Material: Thickened PE for enhanced durability - Size: Compact and lightweight for easy transport - Performance: Maintains cold effectively for extended periods Use Scenarios: 1. Keep your child's lunch fresh and cool during school hours. 2. Preserve breast milk safely for on-the-go feeding. 3. Use in coolers for picnics or outdoor events to ensure food remains at the right temperature.