The men's Patagonia Capilene Thermal Weight Bottoms offer a snug, next-to-skin fit, ensuring superior insulation thanks to the fabric's open-grid pattern. A brushed elastic waistband and flatlock seams minimize chafing, while the gusseted crotch promotes unimpeded mobility. The Polartec Power Grid fabric and spandex blend facilitate easy layering and flexible movement. With added Polygiene permanent odor control, these bottoms stay fresh longer. They prioritize sustainability with a recycled polyester blend, approved by bluesign and Fair Trade Certified.