Arc'teryx Phase SV Comp Top - Women's - $39.48

When engine-block-freezing temperatures come to the valley, you know you'll need to wear the heavyweight Arc'teryx Women's Phase SV Comp Top as a baselayer to fend off freezing once you get into the mountains. Its thick Phasic SV fabric locks in your body heat where it counts, while the stretchy, breathable Phasic AR fabric moves excess heat and moisture out to keep your interior atmosphere comfortable and less susceptible to chills. - $39.48