Insulation = isolation principle. The material that surrounds the body absorbs the air warmed by the body.
The days when outdoor jackets looked like shapeless tents are long gone... thank goodness! Our outdoor jackets are made to keep you warm, but not bathing in a pool of your own sweat. Various technologies are now available to help to make the outdoor jackets not only wind and weatherproof, but also easy to transport. Light-weight, slim dimensions, and thoughtfully designed jackets for the all-rounder that wears them.