Smartwool Women's NTS Mid 250 Crew >> $95

Staying warm during cold-weather riding is all about two things: The baselayer and the wind-stopping layer. There are not many Colorado days too cold for my Smartwool NTS Mid 250 Crew paired with a winter jersey and a wind jacket. It's incredibly warm, fitted, exceptionally comfortable and long enough for tall girls. Besides making the perfect baselayer, Smartwool has been a great cyclocross sponsor.