Pearl iZUMi Octane SL II MTB Cycling Shoe,Black/Silver,44 M EU (US Women&#39;s 11 M/US Men&#39;s 10 M),Pearl iZUMi,Octane SL II MTB" /> 100% Synthetic leather Synthetic sole Octane MTB 1:1 Power Plate: Octane Grade Uni-Directional Carbon for ultra-light stiffness 1:1 Anatomic Closure: follows the natural anatomic shape of the foot to eliminate hot spots and remove pressure from your instep P.R.O. 1:1 Heel Cup: with synthetic leather lining and external Carbon Power Band for maximum heel hold and power transfer Pearl Izumi one piece upper with laser technology provides a second skin fit, minimum weight and maximum comfort Molded TPU Toe Cap and high traction Rubthane lug tips deliver off-road durability and traction