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 Soft, brushed, fast-drying elastic is sewn into wide waistband for added next-to-skin comfort and improved fit; locker loop for hang drying Diamond-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance Gusseted crotch for comfort and unimpeded mobility Flatlock seams to minimize chafing 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