Through research and development, Dale of Norway was able to come up with the Knitshell (TM) concept, a wool fabric that is windproof, breathable and water repellent. It is a 3-layer fabric consisting of a water repellent knit, 100% wool knit fabric that is fused with a breathable windproof membrane and a soft inner liner, creating an amazing fabric with technical properties. This is proprietary to Dale of Norway and we use it exclusively in our outerwear collection.