The Trango Pro GTX is La Sportiva's pinnacle mountaineering boot for our 3-season alpine adventures. Made with cutting edge materials, the pro version of the Trango keeps our weight down while adding aVortex gaiter to seal out snow and debris. The traction also stands out for us with Vibram rubber, an impact braking system for safer descents, semi-automatic crampon compatibility, and a large climbing zone for technical performance.