UPKOCH 4pcs Freezer Boxes for Coolers Ice Ice Block Cooler Packs Reusable Boxes for Outdoor Use

["Compact and Portable Design: Measuring 7.08 by 2.36 by 1.57 inches, these small ice boxes fit conveniently into most coolers and freezers without occupying excessive space","Innovative Cooling Technology: These freezer boxes for coolers use advanced ice crystal cooling design to quickly lower temperature and provide a refreshing and comfortable cooling experience for your drinks and food","Energy Efficient and Eco-Friendly: The ice cooling cases operate without electricity, helping to and reduce costs while maintaining effective cooling performance","Durable and Easy to Use: Made from PE material with a sky-blue color, these freezer ice boxes are leak-resistant, reusable, and simple to prepare by filling with water and freezing before use","Versatile Functionality: Designed as reusable ice boxes, they can be used in air coolers or as portable cooler ice containers to keep beverages and perishables cold during outdoor activities or daily use"]