From alpine treks to snowy peaks, the La Sportiva Aequilibrium Speed ​​GTX Mountaineering Boot is a versatile and lightweight mountaineering boot designed for fast movement over difficult terrain. The Aequilibrium Speed ​​GTX Mountaineering Boot is a single boot with Super Gather for enhanced water resistance. Gore-Tex Performance Comfort lining locks out moisture and provides added weather protection and a synthetic polyurethane welt seals the boot and protects against abrasion. Vibram Dura Step tread provides maximum traction on icy and snowy terrain and the shock braking system combined with the Double Heel system provides excellent traction traction and stability on descents. The quick lacing system combined with the zippered edge makes these boots easy to put on and the rear of the boot has a heel welt for use with semi-automatic crampons.