- Durable construction with a high quality design and thick PE material provides a leak-proof performance and makes the pack easy to clean for long-term use in a variety of settings. - Strong cold retention thanks to dry ice crystal particles with relatively coarse granules that offer robust expansion, solid cooling storage, large capacity, and high energy storage for extended cooling cycles. - Easy to use and reusable: the ice pack can be frozen in the freezer for about 2-4 hours. When needed, water is absorbed by the ice crystals, causing them to swell and freeze, enabling effective cooling. - Cold and frosty performance: these home freezer blocks can be used as ice crystals for air conditioning units to help cool and deliver colder air. - 2-3 practical use scenarios: - Keep perishables or beverages cool during picnics, camping trips, road travel, and grocery shipments by placing the pack in your cooler or lunch box. - Extend cooling time in home or office coolers for parties, events, or daily use, ensuring snacks and drinks stay cold. - Enhance cooling in compatible air conditioning or climate control setups to achieve lower ambient temperatures and improved efficiency in appropriate environments.