Patagonia's Capilene Thermal Weight Bottoms are breathable, lofted baselayer to keep you warm in cold conditions. Polartec Power Grid fabric with HeiQ Pure odor control.PRODUCT FEATURES:*Flatlock seams to minimize chafing*Fair Trade Certified sewn, which means the people who made it earned a premium for their labor*139 g (4.9 oz)*3.8-oz (129-g) Polartec Power Grid 92% recycled polyester/8% spandex with HeiQ Pure odor control*Fabric is certified as bluesign approved *Polartec® Power Grid® fabric with HeiQ® 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 *Spandex adds stretch and ease of movewoment *Flat waistband has brushed inner elastic for next-to-skin softness *Gusseted crotch for comfort and unimpeded mobility Patagonia Women's Capilene Thermal Weight Bottoms43692