A breathable, lofted baselayer to keep you warm in cold conditions. PolartecA(R) Power GridA(R) fabric with HeiQA(R) Pure odor control. Fair Trade Certified(TM) sewn. Features PolartecA(R) Power GridA(R) fabric with HeiQA(R) Pure odor control has a smooth face for easy layering Fabric&&';;s open-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance Soft, supple fabric Elastic waistband is brushed for next-to-skin softness Gusseted crotch for comfort and unimpeded mobility Functional fly Flatlock seams to minimize chafing; Fair Trade Certified(TM) sewn Made in Nicaragua Weight 133 g (4.7 oz) Materials 3.8-oz (129-g) PolartecA(R) Power GridA(R) 92% recycled polyester/8% spandex with HeiQA(R) Pure odor control Fabric is certified as bluesignA(R) approved Fair Trade Certified(TM) sewn