Fahrenheit Temperature Display - Our insulin cooler travel case features a Fahrenheit temperature display, allowing you to clearly monitor the real-time internal temperature. Insulated Cooler Bag for Travel - This portable cooler bag for diabetes supplies is made with EVA exterior material and insulated with aviation-grade pearl cotton and aluminum foil lining, offering effective thermal retention and waterproof performance. Keep Cool for a Long Time - No electricity required. Includes two large ice packs (TSA approved). After freezing for 5-8 hours, the ice packs maintain an internal temperature of 35.6°F to 46.4°F for 5-8 hours when the external temperature is below 86°F. The travel medicine cooler keeps insulin at a safe temperature below 74°F for over 24 hours. Large Capacity Medicine Storage Space - Designed with organized compartments, this diabetes supply bag offers ample space to store 3-6 insulin pens, syringes, alcohol pads, cotton balls, and other essential items for blood sugar management. Instructions - 1. Freeze the ice pack for 5-8 hours until fully solidified. 2. Place the medication and frozen ice pack inside the bag to begin cooling. Note: The ice pack is reusable and can be refrozen for future use. Expected lifespan of the refrigerant is 3-5 years with proper care.