Women. X ULTRA TREK GTX W. L40798400. Women’s Leather Hiking Boots. A lightweight, grippy, protective shoe for fast hiking. The women’s X ULTRA TREK GTX is a lightweight, speed hiking monster with aggressive traction and complete waterproof protection. It devours trails, helping you move quickly over hard or soft surfaces. Light weight . Lightweight materials and welded seams make it one of the lightest shoes available, while maintaining flexibility and comfort on the trail.