Air bag vest breathability

Hello all,

I had a big problem with overheating during summer with my tech air 5. Hence I wanted to upgrade. I will use the airbag on the street and on the track. I thought about 7x or Tech air 5 plasma.

Can anyone chime on how these 2 airbags fare in terms of breathability? Are they a decent upgrade for the old tech air 5? Is the plasma much better than the 7x?

Thank you!