A high performance lace-up climbing shoe perfect for steep sport routes and difficult bouldering. Sick down-turned edging power is what you get in this brilliantly designed high performancework of art. La Sportiva strategically placed Lorica (does not stretch) and leather (does stretch) in specific patterns to design the most powerful edging machine on the market they call it bi-lateral stretch technology. A 3D cupped hytrel midsole under the toes ties into a high tension figure-eight rand that allows you to grab features with your feet and go for the chains.