The Helly Hansen Women's Lifa Baselayer Pant is a highly rated choice for women's synthetic base layer bottoms on Amazon. These pants are made with Helly Hansen's Lifa fabric, which is known for its excellent moisture-wicking properties. The Lifa fabric helps to keep you dry and comfortable during intense activities by moving sweat away from your skin. These pants also provide lightweight insulation, making them suitable for cold weather conditions. The flatlock seams reduce chafing and irritation, ensuring a comfortable fit. These baselayer pants have a slim fit and an elastic waistband for a secure and supportive feel. They are available in various sizes and colors to suit different preferences.