Get with the program.
Chances are good that you've already experienced the benefits of wool in your baselayers, beanies, and socks, but what you're missing in terms of insulating layers is the Ortovox Women's Piz Bial Jacket. Insulated with Swisswool, the Piz Bial is a light and breathable insulating layer that carries with it all the natural benefits of wool. Since the jacket is insulated with wool, it effectively manages body temperature, so you stay at that just-right temperature, but it is also highly breathable, so you won't get too stuffy when you're hiking a steep section of trail, or making the long approach to the crag. The jacket is highly compressible, too, and can be stowed inside of the included stuff sack when the temperatures start to climb.
Pertex Microlight fabric
Swisswool insulation
Regular fit
Reversible
Bound cuffs and hem
Hand and chest pockets
Item #ORT002R
Material: Pertex Microlight
Insulation: Swisswool (88% wool, 12% polyactide)
Fit: regular
Pockets: 2 hand, 1 chest
Claimed Weight: 12.3 oz
Recommended Use: hiking, climbing
Manufacturer Warranty: 2 years