The Columbia Women's Midweight Base Layer Tight is perfect for layering under your pants during cold weather. Made with a blend of polyester and elastane, these tights provide a comfortable and snug fit. The Omni-Heat thermal reflective lining retains body heat, while the Omni-Wick technology wicks away moisture to keep you dry. With its ergonomic design and flatlock seams, these base layer tights offer maximum comfort and flexibility.