Feature: 1. Multifunctional: This insulin cooling wallet is multifunctional and can keep insulin and other temperature sensitive medications cool and secure for up to two days, which is very practical and convenient. 2. Excellent Polyester Fiber Material: This insulin cooler wallet is made of excellent polyester fiber material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life. 3. Reusable: This insulin pen cooling bag is reusable, you can wash it with cold water after use to keep the organizer clean and hygienic, so that the medicine will not be times contaminated. 4. Good Performance: This insulin cooler bag can be used repeatedly for more than 2‑3 years, secure to keep for at least 72 hours in one operating, insulin does not need a refrigerator and constant replacement of large amounts of ice, only water. 5. Easy To Use: This medication cooling wallet is easy to use, you just need to immerse it in water for 20‑30 minutes until the inner bag expands to cool the bag is able to act as a cooler. Specification: Item Type: Insulin Cooler Bag Material: Polyester Fiber Size: Approx. 21 x 7cm / 8.27 x 2.76in Performance: Can be used repeatedly for over 2-3 years, can safely preserve for at least 72 hours in one operating, insulin does not need a refrigerator and constantly changing a large amount of ice, just use water.. Package List: 1 x Insulin Cooler Bag 10 x Transparent Bags Note: Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.