Designed for seamless transitions between seasons and conditions, the Columbia Whirlibird V Interchange Jacket easily handles spring hikes, summer thunderstorms, and winter ski days. The 3-in-1 jacket features a waterproof Omni-Tech shell that can be worn by itself on rainy summer afternoons or combined with the insulated liner jacket for total warmth and protection as the snow starts to fall. The inner jacket features Thermarator synthetic insulation, and an Omni-Heat thermal reflective lining that traps our body heat for an extra layer of defense as we take the ski lift up to put down laps on our favorite runs. The thoughtful design comes equipped with a snap-away powder skirt and zippered underarm vents, truly making it the only jacket we need for year-round adventure.