The La Sportiva Trango Tech Leather GTX Mountaineering Boot bridges the gap between backpacking and mountaineering for a boot that can confidently tackle all types of terrain. Its low profile sole and midsole allow technical footwork and edging capability when climbing easier graded routes while offering semi-automatic crampon compatibility for glacier travel. The leather upper and Gore-Tex membrane keep your feet dry and protected across mountainous terrain and the gusset free tongue construction increases comfort for long miles on the trail. Additionally, the Trango features a 3D Flex system that promotes precise support on rough terrain and a to-the-toe lacing system that delivers a precise fit for enhanced control that's appreciated whether you're climbing a new route or traversing technical terrain. Customer feedback suggests this shoe runs small, we would suggest sizing up if you are unused to a tight performance fit.