J. Crew Women's Polartec Fleece Half Zip Pullover, Small

Polartec (the company that invented the warm, cozy fabric) plus cool details like a front kangaroo pocket, adjustable drawcords at the hem and contrasting zipper pulls. Bonus: It's roomy enough to layer over your favorite sweater. Feel-good fact: Polartec fleece is a bluesign®-approved fabric, which means it's produced with safer chemicals and in a way that has minimum impact on people and the environment.