The Columbia Whirlibird™ IV Interchange Jacket is an essential piece of mountain-ready apparel. The waterproof-breathable shell and thermal-reflective, insulated liner offer unmatched warmth when worn together, and can be adjusted through features like an adjustable hood, powder skirt, cuffs, and hem. Underarm vents and multiple pockets for everything from ski passes to goggles make this the perfect jacket for the slopes.