A breathable, lofted baselayer to keep you warm in cold conditions. PolartecA(R) Power GridA(R) fabric with HeiQA(R) Pure odor control. Fair Trade Certified(TM) sewn. Features Power GridA(R) fabric with HeiQA(R) Pure odor control has a smooth face for easy layering; fabric&';s open-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance; Fair Trade Certified(TM) sewn Self-fabric backing on collar with internal neck tape for comfort; 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 skin Full underarm gussets for range of motion and chafe-free comfort Low-profile elastic thumb loops for secure hand coverage Flatlock seams to minimize chafing; drop tail for increased coverage Made in Colombia Weight 139 g (4.9 oz) Materials 3.8-oz (129-g) PolartecA(R) Power GridA(R) 92% recycled polyester/8% spandex with HeiQA(R) Pure odor control Fabric is certified as bluesignA(R) approved Fair Trade Certified(TM) sewn