A breathable, lofted baselayer to keep you warm in cold conditions. Polartec® Power Grid® fabric with HeiQ® Pure odor control. Fair Trade Certified™ sewn. Features Warm, Comfortable FabricPolartec® Power Grid® fabric with HeiQ® 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 Offset Shoulder SeamsOffset shoulder seams eliminate chafing under pack straps Motion-Friendly Underarm GussetsFull underarm gussets for range of motion and chafe-free comfort Flatlock Seam ConstructionFlatlock seams to minimize chafing; drop tail for increased coverage; Fair Trade Certified™ sewn Self-Fabric Zip-NeckSelf-fabric backing on collar with internal neck tape for comfort; locker loop for hang drying Deep Center-Front ZipperLong center-front zipper vents body heat and is backed by kissing welts for low-bulk comfort next to skin Low-Profile Thumb LoopsElastic thumb loops for secure hand coverage Country of OriginMade in Colombia. Weight176 g (6.2 oz) PATAGONIA Men’s Capilene Thermal Weight Zip-Neck