Did one more longish ride with this jacket, ‘bout 100 miles at around 80*F. This thing is magic. As soon as you get moving cooler air flows right through it. According to other reviews, the “silver” version(it’s white) optimizes cooling, esp on city rides where you’ll potentially be sitting at red lights. I got the black one and I started heating up noticeably as soon as I stopped. I knew this going into the purchase and disregarded the warning. I tend to be partial to black in spite of myself. Out of around the 40 t-shirts in my wardrobe, maybe 5 aren’t black.
I’m really happy with this thing.