Hi, can anyone please recommend a large cool bag to keep insulin at the correct temperature on long journeys. I am (hopefully) going abroad for 3 months in the summer which means taking quite a large supply of insulin (both pre-filled pens and cartridges). The insulin will be refrigerated on arrival at my destination but the journey will take around 24 hours by car and ferry. I already have a Frio wallet which works really well for a few pens but I need something larger for this trip. There are many that are recommended for meds available on the market but it would be good to have one that is tried and tested. Thank you.