Flexible Coax

I have used many brands of Coax and Ethernet cable in my job and I have hated Canadian winter the most when we have cabling jobs to do. It does not seem to matter what brand of cable I use, it all get rigid below freezing and takes about 15 minutes warming up to be pliable enough to actually use. It is just a fact my techs and I have had to get used to in our job. The problem is quality of cable varies and if you do find one that does not get stiff in the cold, I would be very suspicious of the quality of it as I have never found one that does not stiffen, and the use of quality plastics for shielding are absolutely critical to the performance of the cable. I would also never try to uncoil Coax in very cold temps (around 0 degrees F). I have actually seen Coax fracture inside (where you cannot see it unless you strip it down and look for the fracture)