MATERIALS: The insulin bag is made of durable, eco-friendly, waterproof oxford cloth, keeps all the contents of the bag safe. REASONABLE DESIGN: Insulin cold storage bag with multi-layer designs, easy to use. to place different types of medicines. LIGHTWEIGHT AND PORTABLE: The size of the insulin bag is approx. 22 x 10 x 5cm / 8.6 x 3.9 x 2in. Easily fits in your luggage, which works great for camping and traveling. CONVENIENT ORGANIZER: The medicine refrigerated bag has zipper designs, it is easy to open and close the bag, it can better protect the internal medicines. INSULIN POUCH COLD STORAGE TIME: Keep the temperature in the package at 2-24 degrees Celsius, about 12 hours in summer, about 24 hours in spring and autumn.