Panama Sole Technology using SOF ROC rubber Dual density EVA midsole Full length Rock 'n Roll Plate Waterproof membrane construction Quick drying nylon mesh and microfiber PU upper Molded external rubber toe Rugged Trail Runners having tactical features starting with Altama's legendary Panama Sole technology. Using sticky SOFROC rubber that wraps up in the arch to aid in fast roping, we've turned a typical trail runner into a tactical machine! Rugged Trail Runners having tactical features starting with Altama's legendary Panama Sole technology. Using sticky SOFROC rubber that wraps up in the arch to aid in fast roping, we've turned a typical trail runner into a tactical machine!