A classic, all-around 100% recycled polyester baselayer. 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® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.Features Smooth, soft face makes for easy layering; HeiQ® Pure odor control keeps things fresh Zip-neck styling with internal neck tape for added comfort; locker loop for hang drying Raglan shoulder seams allow freedom of movement, with full underarm gusset for range of motion and chafe-free comfort Long center-front zipper vents body heat and is backed by kissing welts for low-bulk comfort next to skin Elastic thumb loops for secure hand coverage Fabric’s diamond-grid pattern next to skin provides warmth and breathability and wicks moisture Fair Trade Certified™ sewn, which means the people who made it earned a premium for their labor Specs Fit: Slim fit Material: 4.3-oz (147-g) 100% recycled polyester diamond-grid double knit with HeiQ® Pure odor control. Fabric is certified as bluesign® approved. Fair Trade Certified™ sewn Country of Origin: SRI LANKA