Put on a layer of stink-resistant warmth and let's do this thing. The women's Burton [ak] Baker Power Wool™ Base Layer Crewneck Top stays light but keeps out the cold like a heavyweight layer would. Ride all day long in breathable, sweat-wicking fabric, and stash your things in the patched-on pocket while you're at it. It dries quickly so you don't have to worry about how much backcountry pow you kick up as you get after it.