A versatile leather mountaineering and backpacking boot perfect for light duty mountaineering, heavy hiking and backpacking or various types of outdoor work situations where you need durable support and all-day comfort. This boot begs for abuse again and again. La Sportiva used a new tapered 8mm high density Nylon that provides a smooth flex and protection throughout the boot, which allows for new-matic crampon compatibility and long lasting consistent flex.