Lightweight, all-season baselayer bottoms with a gusseted design and a touch of stretch, the 200 Zone Leggings offer breathable insulation and unrestricted range of motion on any day of the year. The Zone features our BodyfitZONE construction, which combines lightweight stretch merino wool jersey fabric with strategically placed merino mesh panels to help improve ventilation and regulate temperature during stop-and-go days of skiing, climbing and cold-weather hiking. The brushed elastic waistband and flatlock stitching keep these bottoms from chafing during day after day of dynamic motion.