The Columbia Women's Midweight Stretch Baselayer Tight is a top-rated choice for women's athletic base layer bottoms on Amazon. These tights are made with Columbia's Omni-Heat technology, which reflects body heat back to keep you warm in cold conditions. The four-way stretch fabric allows for a full range of motion, while the flatlock seams minimize chafing. The wide waistband and fitted silhouette provide a secure and comfortable fit. These tights are perfect for a variety of outdoor activities, from skiing to hiking. With their excellent insulation and performance, they are highly recommended by customers.