We've reduced the bulk in these Intraknit Merino 250 bottoms, bringing a new dimension to our active winter wear. Targeted insulation and ventilation allow you to stay comfortable while you're out working up a sweat. Our 3D-knit, articulated design is sculpted to the body to enhance movement and comfort in high-intensity activities, meaning that, while you're out running down your goals, these bottoms will help you stride easily toward your finish line.