The Columbia Women's Bugaboo II Pants are a popular choice for ski mountaineering. These pants are made from a durable and waterproof fabric, which provides excellent protection from the elements. The Bugaboo II Pants feature a regular fit and articulated knees, allowing for a comfortable and ergonomic fit. They also have a range of features designed specifically for ski mountaineering, such as reinforced knees and seat, adjustable waistband, and integrated gaiters. With their affordable price and reliable performance, the Columbia Bugaboo II Pants are a great option for both beginners and experienced ski mountaineers.