Features 1、NO POWER REQUIRED: Insulin cooler bag uses refrigerant to store cold and keep warm, no power supply is needed, just freeze the refrigerant for 6‑8 hours to maintain the desired temperature for a long time. 2、LONG LASTING: Insulin cooler travel case is made of aluminum film and sealed with pressure film technology to keep insulin cooler for longer period of time. 3、EASY TO CARRY: Insulin travel case is small and easy to carry, and can be placed in your backpack or handbag. Perfect for short trips, camping, traveling and emergency kits. 4、KEEPS IN GOOD CONDITION: Portable insulin cooler bag is perfect for keeping cold supplies cool and medical supplies in good condition. 5、DURABLE AND FLEXIBLE: Portable medical cooler bag is durable and flexible and will not get crushed. The storage space is large and easily meets your storage needs. Item Type: Portable Insulin Cooler Bag Material: Fabric Matt Film PU, Inner Environmental Protection Aluminum Film Package List 1 x Portable Insulin Cooler Bag 1 x Aluminum Film Bag