The Goldbergh Serena Half Zip Turtleneck Mid Layer is a sleek and stretchy layer that helps to keep you warm This turtleneck puts up another barrier to heat loss but its made from technical fabric so it wont hinder your breathability The Serena toes the line between function and fashion and completely outdoes the competition 85pct polyester 15pct spandex material Stretch fabric for comfortable movement frac12 zip for easy on/off Slim fit for a closer fit to body Center Back Length 25 Machine washable for easy care