The Marmot Driclime jacket or windshirt might fill the bill. It has a very thin layer of fleece inside a nylon shell. Very good breathability, not so good on water resistance (but you can't really have both). Trim fit, so no flapping in the wind. It's really made for hikers, but hikers absolutely love these and find they also work well for running and biking. The windshirt (which I have) has no elastic at the bottom, so unless you tuck it in or wear a belt, the bottom edge can be a bit breezy. Maybe the jacket has a snugger bottom.


marmot driclime jacket
http://marmot.com/products/product.p...style_id=I1046

original driclime windshirt
http://marmot.com/products/product.p...style_id=I5607

vest version:
http://marmot.com/products/product.p...style_id=I1045