During the winter months warmth is a valuable resource, stay warm with the B360 Men's Back Up Jacket. It is a full 3000mm/3000g waterproof/breathability to protect you when you need it. Under arm venting sheds excess heat and helps regulate your temperature. A quick adjust hem cinch, an internal snow skirt, and a detachable hood give you options to keep out the wind and cold. It has a durable YKK center front zipper, and zippered hand warmer pockets to keep your hands warm or you chap stick secure.