Get a Patagonia or North Face Primaloft jacket. They are a bit pricey but you can wear them as a sweater, a layer with a fleece jacket or pullover. They allow you to stay warm in cool weather without overheating and, as I learned yesterday, I can wear minimal base layers in much colder weather. I got mine, a Patagonia Air Nano jacket because it is a bit quieter than the North Face, as an early Christmas gift from Laura's dad. Both the North Face and Patagonia are machine washable, are supposed to be warm when wet (haven't been THERE yet), are very quiet under fleece, very light and packable. Don't know about the North Face but my Patagonia is water resistant to the point it can be worn casually in a normal rainstorm and keep you dry. IMO, both are worth every penny especially if you want warmth without bulk. Now I am going to be searching for the bottoms.