The Evolv Defy Lace Climbing Shoe is an advanced entry-level rock shoe. Designed with slight asymmetry and camber, the Defy Lace allows for more precise foot placements, helping new climbers improve more quickly when compared to most flat, symmetric beginner climbing shoes. Ideal for climbers who want to customize the fit of their rock shoes, the ¾ speed-lace option lets you cinch them down for a bit of extra precision and performance. The lace-up version also has a slightly higher PSR rating (5) than the Defy (strap closure) and a 4.2mm outsole, making it a more powerful option while retaining enough sensitivity to learn proper foot technique. We made the upper out of a perforated microsuede for increased breathability, and the TRAX SAS outsole is the stickiest rubber compound that we make.