I have used the jacket two times now. The first day I climbed with it 4600 feet in temperatures ranging from 34 degrees to 56 degrees. The second time was a ride in 32 degree weather with strong winds. Colorado with a humidity of 36%.
During the ride at 32 degrees, the jacket was amazing. I only wore the Alpha without Base Layer. The first part of the ride was downhill. Even with windchill into the 20's, I was toasty warm. At high effort, going level, temp about 38 degrees, I just unzipped a few inches and the temp inside the jacket was great.
On the hill climbing where it was getting into the 50's at times, I was getting a little hot. I had to unzip the outer layer completely and the inner one partially. The problem area was the sleeves. They are also wind proof and it got fairly sweaty in there.
The inner "jacket" looked really short when I tried it on standing up, but while riding it lays perfectly. Great design.
I have not tested it in rain or snow but I put it under the faucet with water running on it and it beats right off. (see video below)
Excellent quality construction and materials!
Great for temps into the 20's and up to the 50's
(Although if it stays over 45 degrees, I would use the Castelli Trasparent Due Jacket. Sleeves and back are not wind proof)
Collar is great and not too binding
The "Raw Edge" at the sleeves and bottom are AWESOME. The jacket does not ride up and stays in place
Front pocket holds iPhone perfectly
Materials are so soft, you can barely feel the jacket when wearing it. Definitively feels more like a jersey.
Seems to be very water resistant.
- Price (But well worth it)
- When unzipped a bit, the collar will lay on shoulder and make constant rubbing sound. A couple velcro tabs to hold the collar in place would have been great. This is a minor annoyance.
I'm 6 feet tall, 160 lbs. Large fits great.