Description: 【Efficient Cooling】: This water filled ice crystal box is designed for efficient cooling and long term preservation, and is very suitable for outdoor gatherings, daily fruit storage, seafood preservation and other occasions 【Environmentally Friendly Material】: Made of quality PE material, ice box ensures the safety of direct contact with food and is environmentally friendly 【Easy to Use】: Just add water to the ice crystal box to the scale line (do not overfill), wait for three minutes, and then put it in the refrigerator to freeze. After freezing for 3-6 hours, the ice bag can turn into a large 【Reusable】: Made of sturdy PE material, the cooling ice packs can be reused while maintaining its cooling efficiency 【Convenient Packaging】: Contains six ice blocks to meet your various cooling needs in daily life or special occasions Specification: MAterial: PE   Size Chart:11cmx2cmx15.5cm/4.33inchx0.79inchx6.10inch Package Includes: 6 Ice Boxes Note: Please allow slightly errors 1-2cm differences due to manual measurement.