The Columbia Men's Whirlibird IV Interchange Jacket is a popular three-in-one jacket that features a waterproof-breathable shell and thermal-reflective, insulated liner. You'll also enjoy the zip-in interchange system, and underarm venting to release heat when hot or you can zip up when trying to lock in heat. Enjoy the mountain-ready features such as the ski pass pocket, zippered security pocket, internal mesh pockets to store your goggles, and two hand pockets to store other necessities. Additionally, this jacket features an adjustable hood, powder skirt, cuffs, and hem to keep snow out of unwanted places. The Columbia Men's Whirlibird IV Interchange Jacket can be worn separately or together for maximum warmth this winter season.