Layering for warmth can be tricky, stream line the process with the Patagonia Women's Capilene 3 Mw Bottoms. Made of warm Capilene® 3 Midweight fabric, it is the most versatile and fastest-wicking performance baselayer around. Designed to manage the extremes of high-output exertion in cool to cold conditions, it offers excellent insulation and ultimate comfort next to the skin. They are brushed on the inside for warmth, with a jersey exterior that glides smoothly under layers. Details include a comfortable brushed-elastic waistband and a gusseted crotch for extra mobility.