Heavyweight women’s merino wool base layer bottoms for highly aerobic days in cold weather, the 260 Zone Legless features zoned ventilation panels for active temperature regulation. The BodyFitZone technology incorporates breathable zones strategically placed for high-intensity activity, providing active temperature regulation and ample breathability. Additional features include a gusset for enhanced mobility and comfort, as well as flat-lock seams to prevent friction. Stay comfortable and regulated during intense activities with these advanced base layer leggings.