The 32 Degrees Women's Heat Base Layer Leggings are a popular choice for women's synthetic base layer bottoms on Amazon. These leggings are made with a blend of polyester and spandex, offering a soft and stretchy fit. The Heat technology provides warmth without adding bulk, making them suitable for cold weather activities. These leggings have a brushed interior for added comfort and insulation. The moisture-wicking fabric helps to keep you dry and comfortable during intense workouts. With a wide waistband and a fitted silhouette, these leggings offer a flattering and supportive fit. They are available in various sizes and colors to suit different preferences.