Fabric provides warmth and breathability and wicks moisture; smooth, soft face makes for easy layering; HeiQ® Fresh durable odor control keeps things fresh Diamond-grid pattern next to skin provides superior warmth, breathability and moisture-wicking performance Soft, brushed, fast-drying elastic is sewn into wide waistband for added next-to-skin comfort and improved fit; locker loop for hang drying 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 Specs Weight : 156 g (5.5 oz) Made in Sri Lanka. 100% recycled polyester diamond-grid double knit with miDori™ bioSoft for added wicking and softness, and HeiQ® Fresh durable odor control Fabric is certified as bluesign® approved