the sun???

You could purchase a Frio case, you soak the inner case in water & gel crystals expand, put it in the outer case & the evaporation keeps the pump at a reasonable temperature. They're ok, but the one I have has to be looped onto a belt, so is not the most practical item. I have only used it when sunbathing to put the pump in & then hide the whole thing out of direct sun under the sunbed.
I haven't had a problem with insulin breaking down in the heat so quickly that the stuff in the tubing doesn't work.
Other than that, I spent a few weeks in Brazil last year (no sunbathing, but hot) & didn't do anything differently to normal. My insulin supplies weren't refrigerated for the whole holiday & no problems ensued.
Personally, I don't concern myself too much, I just test a little more frequently as the food I'm eating will be different, I can't weigh all my carbs & the heat burns energy faster. You may want to consider programming a different basal profile, slightly below normal to cope with the effects of the heat.
Most of all, have a good holiday & remember that less than ideal control for a week or two won't do you any long term harm.

Just to let you know I contacted medtronic today, the makers of my pump, and they have come back saying they do not recommend using the frio pump cases with their minimed pumps as moisture can leak through and damage the pump. It surprised me but at least they've given me a straight answer. They advise to try and keep the pump put of full sun as much as possible and to consider changing insulin every second day. They also said that many people use these pumps in hot countries without any cooling cover without a problem. Glad I asked as I guess my insurance would have questione it had I have used the frio around it and something went wrong.

Hia Mindii - we go to a little island in greece on Wednesday I plumped for insurance4pumps as they are dedicated pump insurers and come recommended on a few diabetic websites including this one. £6.99 per month which I'm told is expensive but it's given me peace of mind at least. I may shop around and ask house insurers next time but I was late in getting insurance (already had pump for 6 months !) and they covered loan pumps too. All the best.

His Mindii - posting this message from Symi in Greece. Well first time abroad in hot climate with my pump. To my astonishment I've needed to be on a temp basal of 140% all day only reverting to normal basal from 8pm to 10am. This is the complete opposite to injections and heat when I needed less insulin :roll:
I panicked a bit on day 1 thinking it wasnt working right and I even did a cannula change on day 2 (instead of normal 3) in case insulin in pump was getting affected by heat. But it just appears that I need more background insulin and this has brought my BS down from 13/14 to 8. I guess I'll always be learning with diabetes!!
Greece beautiful as ever and people still very cheery and friendly with everything going on in their country. Enjoy Crete
x

Will pm at the weekend on way home now after a super week.