I want to travel for 5-7 weeks, so wish to keep my insulin at fridge temperature (2-8’C) for the entire outward journey, whether this be boat or airplane. Does anybody have any experience of using (and tempering) the biogel-packs that are used for keeping some cooling flasks at 2-8’C for long periods of time? (For example, The Voyager Cooler made by 4AllFamily but there are many other examples.) I am also considering a battery-powered tiny fridge, such as Lifeinabox or the Voyager Cooler, which works in passive (biogel pack) or active (USB/battery) mode. However, I need to first ascertain whether the passive gel-pack coolers are worth considering. In my past experience, the tempering process is very difficult to get right, vastly different to the manufacturer’s instructions and therefore not user friendly. Wondered if anyone has any recent experience of using biogel packs in Coolers please.