Terramar Ecolator Fleece 1/2 Zip Top - Women's Fleece Made in USA Constructed of 95% micro polyester, 5% spandex ClimaSense (CS) treatment is designed to respond to your body's changing conditions to keep you comfortable no matter what your activity level The CS system adapts to the skin's surface temperature, providing a warming effect when you are cold and a cooling effect when you are active, with a dynamic moisture transport system ClimaSense offers advanced odor control and uses bluesign approved, performance based technologies Soft, breathable, and fast drying