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 Classic crew 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 Diamond-grid pattern next to skin provides warmth and breathability and wicks moisture Elastic thumb loops for secure hand coverage Stretch for added comfort and improved fit during movement 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