- Durable Construction: Made from thick PE material, these ice packs for lunchboxes are built to last. Their robust design ensures they won't easily break, providing reliable performance for long-term use while maintaining optimal cooling for your food. - Portable Design: This compact ice pack fits seamlessly into your backpack, allowing for effortless transport. Enjoy the convenience of cooling your items on the go without adding extra bulk. - Easy to Use: Simply add water to activate the ice crystal particles. Freeze the pack for 2-4 hours, and it becomes an efficient cooling solution to keep your meals fresh and safe in your lunch container throughout the day. - Versatile Applications: Perfect for keeping milk and other perishables cold, this ice pack also enhances the performance of cooling systems and fans, making it a multi-functional addition to your daily routine. It meets various cooling needs without compromising safety or efficiency. - Ideal Scenarios: Use it in lunchboxes for school or work, keep beverages chilled during picnics, or integrate it into coolers for outdoor events. This ice pack is a practical solution for anyone needing reliable cooling support.