Recommended for: mild weather alpine climbing, glacier travel, and carrying heavy loads. We've updated our versatile guide boot with improved ankle flex for even better hiking comfort. It’s an ideal boot for moderate spring mountaineering routes or long approaches with a heavy load. The thin, lower profile sole is designed for precise terrain feel and is combination crampon-compatible. Featuring a durably waterproof/breathable GORE-TEX lining to protect feet from the elements.