These performance base layer leggings are designed for cold-weather training. The Intraknit 3D knitting integrates insulation, articulation, and ventilation. Made with 52% Merino wool, they offer natural warmth, softness, odor resistance, and durability. Seamless mesh ventilation zones keep the body dry during activity. The slim fit with a mid-rise waist follows body contours, and a 31-inch inseam (medium) supports streamlined layering. Suitable for skiing, running, and high-intensity winter pursuits.