Has anyone done California SBS? And what base layer do you use for your track suit?

I signed up for California super bike school at the end of this month and was seeing what people's pros and cons wereI have the alpine stars tech air suit, I think a sized 44, was also wondering what types of base layers you guys use or recommend via /r/Trackdays https://www.reddit.com/r/Trackdays/comments/9eorhk/has_anyone_done_california_sbs_and_what_base/?utm_source=ifttt