Cold wallets for insulin

Hello, has anyone used or uses cold portfolios to keep insulin well?They have told me very well about them ... Do you know if there are alternatives at lower price?
Thank you!

I have had but I have used them on some trip, to conserve in cold insulin that is not in use ... once I start them, I leave them out of the fridge

Hello!

I have also used them, especially as Morganeta says to get the feathers that are not in travel use but I also use them in summer if I'm going to be out all day.A lot of hot in that season ago.

Unfortunately I don't know a "low -ost" version.In his day I looked even in Aliexpress and it turns out that what they have are cases to put the blue liquid and come out more expensive than in Amazon adding the shipping costs.

If you really need it, I encourage you to buy it.I have a couple of years and keep working for me.

All the best!

Hello.I can tell you the same thing that they have already told you: I find it very useful when I travel with feathers without starting or the days that makes it very hot and I have to carry a ball already open.I have two, and I have always bought them in Amazon at the usual price, I don't know any place where they sell them cheaper.

It is a good product.Cool insulin by evaporation (which botijo).I have used it for about 30 years.At first they were better because they brought more grains.Now you have to renew them periodically.
I also use this chirimbolillo that has the virtue of being manageable and occupying little space:
Link

I also use them.I was looking for a way to maintain fresh insulin when they go from camping, without electricity.And it seems to me that it works great.
In summer in my house the temperature rises a lot and I always have the insulin in the bag.
The first one I bought is three years old and continues to work, so, although it is expensive, I think it is worth it.

Thank you very much.

Thank you