Runs small, and not as comfortable as t-shirts I've gotten from Costco.

After 1 run - 35 degrees, wind gusts to 45mph and sleet, I would give this jacket a giant thumbs up. This is a great jacket for cold weather runs, the front provides plenty of wind protection and the back is breathable enough to let the excess heat build up escape when you are churning out the miles. The water resistance is adequate for the surprise downpour (or sleet like I experienced this morning). The style is off the charts and I love the color. It is thin - as noted by other reviewers, but it is supposed to be - it is part of the flight series of running apparel, where lightweight is at a premium. I did choose the large size because I do like a little room in my jackets.

Much thinner than it looks. And the the back surface is a bit vulnerable. I wore it for jogging for two times, and somehow some scratches appeared. I really appreciate what Zappos did for me. They agreed to to exchange the jacket. Anyway, I have worn this jacket and the label has already removed. So, thank you Zappos!