Swix Zip 1/2 Zip Midlayer Women'sThe innovative Swix Tista Half Zip Midlayer for Women uses a unique fabric blend and comfortable fit that works great for a wide variety of sports. Made from a new engineered fiber from activated coconut husk charcoal, this midlayer offers breathability and thermo regulation to keep you comfortable from start to finish. Whether you're cross country skiing, snowshoeing, running or hiking it's a great autumn look that works equally well on the trails