The Columbia Women's Midweight Base Layer Set is a popular choice among outdoor enthusiasts. This base layer set is made from a blend of polyester and elastane, providing a comfortable and flexible fit. The fabric is designed to wick away moisture and keep you dry during physical activities. The set includes a long-sleeve top and leggings, both featuring Columbia's Omni-Heat technology, which reflects body heat back to keep you warm. With its versatility and performance, this base layer set is suitable for a wide range of outdoor activities, from hiking to skiing.