The Patagonia Women's PowSlayer Bibs are a top-selling ski mountaineering skirt on Amazon. These bibs are designed for the serious backcountry skier, with a focus on durability and performance. The PowSlayer Bibs are made from a lightweight and waterproof GORE-TEX Pro fabric, which provides excellent protection from the elements. They feature a slim fit and articulated knees, allowing for a comfortable and ergonomic fit. The bibs also have a range of features designed specifically for ski mountaineering, such as reinforced knees and seat, adjustable suspenders, and integrated gaiters. With their high-quality construction and attention to detail, the Patagonia PowSlayer Bibs are a reliable and popular choice.