Very good quality. I'm 6'3", 200# and an XXL fits well. The material is and craftsmanship is very good. It's very warm indeed; I'd estimate that it is best between with temperatures less than 8C. If you wore something thermal underneath it'd probably be good down to -5C, maybe more. The arms are long, the back is good, both needed for cycling. It looks good off the bike too.
Two quirky, nit-picky things about the XXL: (1) the pockets are a tab high on your back that they are a little hard to reach. Lower wouldn't have been a problem. (2) the sizing of the fore-arms is a little lenient. If Popeye needed a bike jacket, this would be the one. Just kidding, they're only a little oversized. Don't get me wrong, these two minor things are niggly and I'd still wholeheartedly give the product 5 stars!