IR-heat and covering the balls..

I’m hanging with IR-heat and covering the balls isn’t easy.
The sock always falls of.

Does anybody know how dangerous the IR-heat is to the sperms in the long run?
I know that heat kills the sperm.

Any research about the matter?


BPEL: 7.25"

HG: ~6.25" | MEG:6.25" | Low shaft EG:6.5" | BG: 7"