A classic, all-around polyester baselayer, with 50-100% 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. HeiQA(R) Fresh durable odor control keeps things fresh. Fair Trade Certified(TM) sewn. Features Smooth, soft face makes for easy layering; HeiQA(R) Fresh durable 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, breathability and wicks moisture Elastic thumb loops for secure hand coverage Stretch for added comfort and improved fit during movement Supporting the People Who Made This Product - Fair Trade Certified(TM) sewn Materials Solids and prints: 4.3-oz (147-g) 100% recycled polyester diamond-grid double knit Cross-dyes: 4.3-oz (147-g) 100% polyester (50% recycled) diamond-grid double knit All with HeiQA(R) Fresh durable odor control Fabric is certified as bluesignA(R) approved