The Terramar 2.0 Cloud Nine Bottom Plus Womens Long Underwear Bottom provides the warmth that you will need on the colder days shredding the slopes. The midweight fabric is ultra-soft and features ClimaSense Thermoregulation Technology that automatically adjusts to your body temperature. When you are active and your body temperature is higher than you like the fabric allows moisture to escape easily to help maintain a comfortable feel. When the weather is cold and you need the heat the fabric traps air to maintain warmth. Whether you are skiing, snowshoeing or mountaineering, the Terramar 2.0 Cloud Nine Bottom Plus Womens Long Underwear Bottom is functional performance at its best! 4-Way Stretch Fabric for Ease of Movement, ClimaSense Thermoregulation Technology, Midweight Warmth, Ultra-Soft Brushed Surface, UPF Rating 25+, Hidden Zipper Pocket, Wide Soft Waistband, Flat Seam Construction, Fit: Tight, Warranty: One Year, Wind Protection: Yes, Material: Synthetic, Weight: Mid, Type: Bottom, Wicking Properties: Yes, Water Resistant: Yes, Recommended Use: Snow, Antimicrobial: Yes, Anti Odor: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2020, Product ID: 523894, Model Number: W8218W 010 1X, GTIN: 0721357153101