Originally Posted by
epnnf
Impossible to be waterproof & breathable at the same time.
Well, they aren't marketing it as a dry suit for icy water diving.
If you're on your bike and get hit by a squall, it's nice to throw something over your jersey. Or you're on the top of some epic switchback of steep sweatiness, it sure would be nice to put something on for the descent.
Maybe you don't know what a windbreaker is for?