Features: 1.The Benefits of Ice Packs: Shipping Ice packs are made of reusable HDPE material. After freezing, keep food cool and fresh for up to several hours in insulated bags or lunch boxes. 2.Easy to Use: Just put the ice pack (you need to replenish the freezing solution) in the refrigerator for at least 6 hours. With insulation bag, lunch box, rice bag, cooler use better. 3.Purpose: This ice box is reusable and has a long freezing time. Ice boxes can provide a cooling effect for the transportation of food and seafood, perishables, breast milk, medicines, vaccines, etc. 4.Use in a Variety of Situations: Our ice packs can be placed in gym bags, diaper bags, insulin bags, meal preparation containers or picnic baskets. It& 39;s also perfect for sore muscles and recovering from track and field workouts. 5.After-sales Service: If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Specifications: Material: HDPE material 200g Size: 15*10*2cm 250g Size: 17*8*2cm 300g Size: 18*11*2cm 350g Size: 16.5*9*3.8cm 400g Size: 18.5*16.5*2cm 500g Size: 22*14.5*2.5cm 800g Size: 23*17.5*2.5cm Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. 1 * Ice Freezer Box