Introducing our Reusable Lunch Box Ice Pack. Made from thickened PE material, our ice packis built to withstand wear, ensuring its longevity. Not only can it be used in refrigerators, but it can also be placed in air conditioners or lunch boxes to cool down and meet various needs. Features -Color:Blue -Material:PE -Size: 15.50X11.50X2.50cm/6.09X4.52X0.98in - Cooling: The unique material of these freezer packs allows they maintain their cooling for an extended period, keeping your items cold. - Convenient Freezing: With a short freezing time, these ice packs allow you to prepare for your outings or daily needs without long waiting periods. - Sturdy and Strong: The thickened PE material not only provides durability but also allows that the ice packs remain intact and effective even after multiple uses - Multi-purpose Use: These cooler ice packs can be used for keeping your lunch fresh, cooling down an air conditioner, or preserving food during camping - Compact and Lightweight: The thin and lightweight design of these lunch box ice packs makes them easy to transport and store Package list: 4 packs