The Terramar Unisex Kids' Thermolator Base Layer Pant is the ideal piece for all-day warmth and comfort while out in the elements. These versatile Terramar kids' base layer pants feature an ultra-soft, midweight fabric with Climasense Thermoregulation Technology that automatically adjusts to your body temperature. It does this by trapping air to maintain warmth when your body starts to cool down. When your aerobic activity increases and your skin temperature rises, the fabric allows moisture vapor to escape to maintain comfort. Whether skiing, mountaineering, fat biking, snowshoeing or winter running, these Terramar kids' pants deliver functional performance at its best.