The Outdoor Research Women's Ferrosi Pants are a popular choice for aid climbers. These pants are made from a lightweight and stretchy fabric that provides excellent mobility and breathability. They feature a low-profile waistband that fits comfortably under a harness, and multiple pockets for storing small essentials. The Ferrosi Pants also have a DWR (durable water repellent) finish, making them suitable for a variety of weather conditions. Whether you're climbing in warm or cool temperatures, these pants are a reliable and stylish choice.