Fit & Design: Aspen-tested, with many technical features Contoured fit flatters the body, keeping you stylish with a full, unimpeded range of motion Technology: Lightweight 3M(TM) Thinsulate(TM) insulation provides warmth in any condition Stretch lining panels allow pants to move naturally with your body CZV(TM) - Control Zone Ventilation regulates temperature to trap in the right amount of heat and circulate air where needed most