Features of AUVON Insulin Cooler Case Expandable: The wrap-around expansion zipper increases capacity by 40% and it can hold up to 6 insulin pens, so you can adjust the space according to your needs. Longer Cooling Effects: Durable 2 x 180g ice gel packs with a 6mm thick sealed edge provide longer cooling effects than others on the market. (Based on internal testing: 12 hours of freezing offers 8-10 hours of cooling and keeps the temperature inside the case below 8°C). Great Insulation: The high-density oxford cloth, thickened pearl cotton and quality aluminum foil lining work together to provide longer cooling effects. Detachable Design: The triple-layer compartments keep insulin items well organized, they can be detached to leave more space for large bottles. The convenient carry handle allows for grab-and-go use. Precautions for Ice Gel Packs 1. Frozen the ice gel pack in the freezer for at least 12 hours before putting it in the insulin cooler case. 2. Ice packs are reusable and can be frozen for backup or stored at room temperature. 3. Do not open the cooler case unless it is necessary. 4. Do not place the medication in direct contact with ice packs.