The Lowa Men's Mountain Expert GTX Evo Boot has all the protective features you need for mixed climbing or heavy backpacking trips. Gore Tex gives this boot guaranteed waterproof protection that's also highly breathable for your comfort, and the Insulate Pro fleece footbed has an aluminum coating to provide a surprising amount of warmth. The Flexfit Synchro support ensures an easy ankle flex for a comfortably natural stride whether you're climbing up vertical faces or trekking up steep terrain, and the PU Expert midsole includes nylon shank for stability and a TPU plate that enhances rigidity for automatic crampon capability. The Vibram Dolent sole features an alpine tread design that gives the Mountain Expert high edging stability for precise footing, and a self cleaning profile prevents debris build up between the rubber lugs. This boot also features an X lacing system that complements the C4 Tongue for a customizable, blister free fit, and the Flex laces provide an even distribution of pressure for your comfort. Lowa's proprietary Climate control system perforates the lining to pump heat out and bring in a comfortable amount of airflow to keep your feet prime on the mountain.