YARNOW 4 Pcs Ice Packs for Lunch Boxes & Cooler, 3. 5 X 1 X 5. 5 Inch, Freezer Packs for Air Conditioner Fan, Reusable Ice Blocks for Home Office and Outdoor

["Easy Refillable Design: These cooler ice packs are designed for simple filling with water, allowing users to quickly prepare the ice packs for freezing and use without complicated steps, ensuring lasting coldness","Eco-Friendly and Safe Material: Made from PE material, these small ice packs do not require electricity, making them an option that promotes a healthy and environmentally conscious lifestyle","Optimal Medium Size: Measuring approximately 3.54 x 0.98 x 5.51 inches, these freezer packs offer convenient portability and fit well in lunch boxes, coolers, or air conditioning fans for versatile application","Innovative Cooling Solution: These freezer packs for lunch boxes utilize advanced to effectively lower indoor temperatures when used with evaporative air coolers, providing a refreshing and comfortable environment during hot days","Versatile Usage Scenarios: Apart from enhancing cooling effects of ice packs for coolers, these cold packs for lunch box can also serve as cold compresses or food ideal for office outdoor or travel use"]