The ice packs are designed for easy use and maximum efficiency. Simply place them in the freezer until they are fully , then pack them with your food items. They are for maintaining the freshness of fruits, seafood, and other perishables during transport. The durable design ensures they can be reused multiple times, providing a cooling solution. Features -Color:White -Material:PE, non-woven fabric -Size:38.00X27.80X0.40cm/14.93X10.93X0.16in -No prefreezing required: the automatic water absorption feature eliminates the need for prefreezing, streamlining the preparation process for busy schedules -Enhanced freshness retention: maintains the quality and freshness of perishable goods like seafood and fruits, extending their shelf life during transport -Adaptable composition: the gelbased design molds to the shape of your items, ensuring even cooling and minimizing unused space in packaging -Wide range of uses: for cold chain shipping, lunch boxes, outdoor adventures, and more, offering cooling for diverse needs -safe: designed for repeated use, these packs reduce singleuse plastic waste, contributing to a Package list: 4 Packs for Shipping