Made from moisture-wicking, heat-generating cotton rib, it's both warm and comfortable against the skin. It's thin and fits comfortably without being restrictive. This popular style has seen a steady stream of repeat customers, and in response to requests for only the white version, it's been redesigned. The design, with its tight neckline and contrasting sleeves, is reminiscent of vintage thermals. Stock up on this handy white jacket, which you can never have too many of.