jason sagerwrote a review of Louis Garneau Course Power Shield Jersey - Short Sleeve - Men's on May 15, 2015
Familiarity: I've put it through the wringer
I've been tweaking clothing for years, trying to make clothes do what I want them to do. One of the most difficult conditions to dress for is when weather has the potential to be hot and cold, dry and wet. For days when its a constant mix of both - but a full jacket (I'm not talking about a wind jacket) is too much (to carry or wear) and to go with clothing not designed for precipitation, then this is your go-to-item.
The material sheds water in any form, its long enough on your arm to keep you warm but short enough to wear when going uphill for long periods. Unzip it for moments when things are getting hot, and zip it up when its cold...and once the roads/trails start to get wet enough to spray, you'll come to truly appreciate the construction of the long tail in the back, which had previously been unnoticed.
Of note - it fits TIGHT. It might be designed to wear over a base layer, but I tend to use it over my short sleeve jersey, treating it more as a jacket than a true jersey. It'll go either way, so just think about how you want to wear it. I consider it more of an amazing jacket with shorter sleeves.