The Columbia Women's Midweight Stretch Baselayer Tight is another popular choice for women's base layer pants on Amazon. These tights are made with a blend of polyester and elastane, providing a comfortable and stretchy fit. The fabric is designed to wick away moisture and keep you dry during intense activities. The tights also feature a flatlock seam construction to minimize chafing and irritation. With a midweight design, these pants are suitable for a variety of outdoor activities in cool to cold weather conditions.