Only worn once as they don’t fit my feet. My mistake can show proof of purchase as it was only last month. Experience the pinnacle of alpine technology with the Trango Tech GTX. This lightweight, flexible mountaineering boot is engineered for alpine hikes, technical approaches, and demanding professional use. Its seamless Thermo Tech Injection upper and GORE-TEX lining offer durable, waterproof comfort. The 3D Flex System™ provides ankle mobility and precise support, while the Vibram® Cube sole ensures superior grip on any terrain. Crampon-compatible and built for prolonged use, it´s the ultimate tool for alpinists, guides, and rescuers seeking high performance and reliability