Morning temperatures 30 to 40 degrees F. 30 minute ride. The jacket keeps me cool and dry but not cold, as opposed to warm and sweaty. The jacket is serviceable in temperatures 40 to 50 F. with the vents open. The articulated shoulder sleeves make the jacket aero. The jacket is heavier than previous winter jacket but more effective with the Windstopper fabric.
I bought this jacket to replace an existing jacket of a similar nature. However after going out for my first ride with it it was obvious that I could remove one of my base layers. The jacket performed excellently above 40 temperatures with just one base layer. It was very comfortable and also very visible. easy to ride with, breathable and aerodynamic. Excellent choice for those cold and very cold winter days.