A breathable, lofted baselayer to keep you warm in cold conditions, built of Polartec® Power Grid® fabric with HeiQ® Pure odor control for freshness. Made in a Fair Trade Certified™ factory. Features: Polartec® Power Grid® fabric with HeiQ® Pure odor control has a smooth face for easy layering and an open-grid pattern next to the skin that provides superior warmth, breathability and moisture-wicking performance Self-fabric backing on the collar with internal neck tape for comfort and a locker loop for hang drying Offset shoulder seams eliminate chafing under pack straps Long center-front zipper vents body heat and is backed by kissing welts for low-bulk comfort next to the skin Full underarm gussets offer range of motion and chafe-free comfort; elastic thumb loops provide secure hand coverage Flatlock seams minimize chafing, and a drop-tail hem provides increased coverage Made in a Fair Trade Certified™ factory, which means the people who made this product earned a premium for their labor