The Under Armour Base 3.0 Leggings are the elite Long Underwear Pants that deliver maximum thermal protection in a relaxed, comfortable fit. The secret is the ColdGear grid fabric which is designed to specifically trap heat, dry fast, and maintain your core temperature. For total comfort, The Under Armour Base 3.0 Leggings are built with ergonomic seams and irritation-free construction to keep you moving free and chafe free. The bitter cold is just around the corner - be prepared with a base layer to keep the warmth in and the chill away. Flatlock Seams for Comfort and Eliminates Chafe, Ergonomic Seam Placement, ArmourBlock, Fit: Tight, Warranty: Lifetime, Wind Protection: No, Material: Synthetic, Weight: Mid, Type: Bottom, Wicking Properties: No, Water Resistant: No, Recommended Use: Fitness, Antimicrobial: No, Anti Odor: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2019, Product ID: 432612, Model Number: 1281109-001 S, GTIN: 0889819722491