1. Powerful Cooling Performance: Our Ice Crystal Box features highly efficient dry particles that expand significantly upon water absorption. With a large capacity, it ensures long-lasting cooling and reusability, making it an essential accessory for air conditioners, fans, cool packs, and portable coolers. 2. Durable Design: These leak-proof freezer packs are made from thickened PE material, ensuring robustness and longevity. They are easy to clean and designed to fit perfectly in lunch boxes, coolers, or even insulated bags, providing safe and reliable cooling. 3. Extended Cooling Action: Utilize the Ice Crystal Boxes with portable air conditioners or fans to enjoy a continuous flow of cool air. These reusable freezer packs offer excellent insulation and maintain their cooling efficiency even in high temperatures. 4. User-Friendly Operation: Simply add water, allow the crystals to expand, and freeze for 2 to 4 hours. These reusable freezer blocks activate quickly, making them ideal for lunch boxes, small coolers, and everyday meal prep. Applications: - Perfect for keeping meals fresh in lunch boxes during long workdays or school trips. - Ideal for enhancing the cooling efficiency of portable air conditioners or fans during outdoor activities. - Excellent for use in small coolers for picnics, camping, or beach outings, ensuring your food and drinks stay cool. Experience reliable cooling with our Ice Crystal Box, designed for practicality and convenience in various scenarios.