Patagonia® Men's classic, all-around Polyester baselayer made with 100% Recycled content. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Fresh durable odor control keeps things fresh. Polartec® Power Grid® fabric with smooth face for easy layering; fabric’s brushed-grid pattern next to skin provides superior warmth Breathability and moisture-wicking performance with Polygiene® permanent odor control Long center-front zipper vents body heat backed by kissing welts for low-bulk comfort next to skin Locker loop for hang-drying Raglan shoulder seams allow freedom of movement Full underarm gusset for range of motion and chafe-free comfort Elastic thumb loops for secure hand coverage Flatlock seams to minimize chafing Drop tail for more coverage Fair Trade Certified™ sewn Bluesign® approved fabric Slim Fit Product Features: Fabric:4.3 oz. (147-g) 100% Recycled Polyester diamond-grid double knit with miDori™ bioSoft for added wicking and softness, and HeiQ® Fresh durable odor control Weight:7.2 oz. (204 g) Patagonia Men's Capilene Midweight Zip-Neck Baselayer Shirt