Details A breathable, lofted baselayer to keep you warm in cold conditions. Polartec® Power Grid® fabric with HeiQ® Fresh durable odor control. Fair Trade Certified™ sewn. Material Solids: 3.8-oz (129-g) Polartec® Power Grid® 92% recycled polyester/8% spandex. Cross-dyes: 3.8-oz (129-g) Polartec Power Grid 92% polyester (30% recycled)/8% spandex. Both with HeiQ® Fresh durable odor control. Fabric is certified as bluesign® approved. Fair Trade Certified™ sewn Fit Slim fit Details Polartec® Power Grid® fabric with HeiQ® Fresh durable 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 for stretch and ease of movement Flat waistband has brushed inner elastic for next-to-skin softness Gusseted crotch for comfort and unimpeded mobility Flatlock seams to minimize chafing Fair Trade Certified™ sewn Weight 139 g (4.9 oz) Patagonia Capilene Thermal Weight Bottoms Women's