Note: Mod edited the link to remove the c
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There’s an extra c at the end of the URL, useful though, I hadn’t seen a few of those
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I can absolutely vouch for the efficacy of the Frio. In the early noughties I spent over a year backpacking around SE Asia and all of my insulin was stored in Frio wallets. Half stayed with me in a wallet I kept in my daypack and the rest in another wallet packed inside my huge rucksack. The latter often ended up strapped to the top of rickety old buses exposed to temperatures of over 30°. I would check the insulin regularly and it never felt hot or even warm to the touch and I never experienced any upset in blood sugars that might’ve been attributable to reduced potency or degradation from heat. It’s a simple but great product (I’m not sponsored by them, I should add! 
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