I've had a Showers Pass Club Pro jacket for a year now, though I confess I haven't used it much. The few times I've used it, it's been great. It does trap in some humidity and heat, but it could be worse. Lately, I've worn it with a sweater under it, and it keeps me as warm as a winter coat would, so I'm happy. It has the pit zips, and they probably do help. One thing I like a lot about it is that it is so reflective.