@Ruthbia yes, I use that ... but only for insulin that I have a trip on trip or if I am going to be on the beach all day ... But it is true that this year is when I have given me the electronic pen and I had not taken this into account ... Nothing, disassembly, and regretting.
I have been with DM1 and 36 with insulin feathers and I have never used any refrigeration for the ball in use ... Of course each one is very free to experiment with all the additions that put us in front of us.