When it comes to staying warm in cold weather, the Columbia Women's Omni-Heat Base Layer Set is a top choice. The Omni-Heat thermal reflective lining retains your body heat, while the Omni-Wick technology pulls moisture away from your skin, keeping you dry and comfortable. The set is made from a blend of polyester and elastane, offering a stretchy and snug fit. Whether you're skiing, snowboarding, or simply enjoying a winter hike, this base layer set will keep you cozy.