The 32 Degrees Heat Women's Base Layer Pant Ultra Light 2Pk in Black, size Large, is a blend of polyester, spandex, and a polyester blend fabric. This base layer bottom offers mild compression in the abdomen area, making it suitable for cold weather activities such as skiing. With features like anti-odor, moisture-wicking, and thermal properties, this leggings-style base layer is machine washable and designed for outdoor sports, providing comfort and warmth during intense winter sports activities.