The North Face Men's Thermoball Triclimate Jacket is ideal for rapidly changing conditions or people who can't seem to make up their minds when it comes to how cold they are. The outer jacket is a waterproof, seam-sealed DryVent™ shell that maintains breathability and allows you to stay active and comfortable. Pit-zips provide a rapid escape for excess heat and the media compatible pocket makes it easy to ignore anyone telling a boring story on the ski lift. When the temps drop, the inner jacket can be zipped in, giving you the ultimate in warm weatherproof protection. Insulated with Thermoball™, a down alternative, it will keep insulating even when wet and dries much quicker than down. You'll be so comfortable in the cold, people will assume you're some sort of Viking time traveler and will probably have lots of questions about storing fish and maintaining ships. You better read up.