- Leak-Proof Design: Crafted from thick PE material, these cooling packs feature a seamless structure that ensures reliable stability and effortless cleaning, while maintaining functionality for extended use. - Enhanced Cooling Performance: Utilizing coarse dry ice pellets, these packs offer superior energy storage, effectively preserving low temperatures for longer periods. Ideal for fulfilling substantial cooling requirements. - User-Friendly: These reusable cooling packs freeze within two to four hours and slightly expand during the process, making them easy to prepare for keeping lunch bags cool. - Thoughtful Gift: Designed for self-activating use, these reusable cooling packs come in a set to enhance cooler performance, providing ultra-long cooling retention for extended usage without frequent replacements. Applications: - Perfect for family picnics, ensuring that food and drinks stay chilled throughout the day. - Ideal for outdoor adventures like camping or hiking, where access to refrigeration is limited. - Great for keeping perishables cool during long road trips, ensuring freshness upon arrival. These cooling packs are a smart investment for anyone looking to maintain the freshness of food and beverages in various settings.