Arc'teryx Rho AR Bottom - Women's - $83.27

Sure, its Plush Polartec Power Stretch fabric makes the Arc'teryx Women's Rho AR Bottom a good choice for a mid-winter run on the trails. But where the Rho AR pant truly excels is as a baselayer under a shell or insulated pant on bitterly cold days, when the brushed interior face's rich texture wraps your muscles in protective warmth. - $83.27