The Columbia Whirlibird™ IV Interchange Jacket provides excellent warmth and protection with its waterproof-breathable outer layer and thermal-reflective insulated liner, which can be worn individually or combined. It's crafted for challenging mountain environments, featuring underarm vents, a ski pass pocket, a goggle pocket, a chest pocket, a security pocket, and a hand pocket. Additionally, it includes an adjustable hood, cuffs, powder skirt, and hem for a customized fit.