evo.com | Patagonia Long Underwear Bottoms > Stay warm without the bulk in the Patagonia Capilene Thermal Weight Bottoms. Polartec(R) Power Grid fabric with HeiQ(R) Pure Odor Control delivers Patagonia's warmest, most breathable poly baselayer, cut in a slim fit that layers cleanly under ski pants. bluesign(R) Approved Fabric This fabric offers the highest level of consumer safety by employing methods and materials in their manufacture that conserve resources and minimize impacts on people and the environment. Slim Fit Designed to create bulk-free layering. Gusseted Crotch 4.5oz Polartec(R) Power Grid with HeiQ(R) Odor Control 92% Recycled Polyester / 8% Spandex Flat Waistband with Brushed Inner Elastic | Women's Patagonia Capilene Thermal Weight Bottoms 2027 - X-Large Blue | Spandex/Polyester