The fastest technical trail competition shoe! The MTR 201-II Boa® is very direct and light. The IP EVA midsole provides good cushioning and has a heel drop of 6mm. The Stone Protector and D3O® Strobel construction make sharp stones barely noticeable. This competition shoe also features the patented Rolling Concept®, the aggressive gripex™ Sonar tech sole with integrated Sonar technology, Base Fit Advanced® with improved efficiency, memo foam, VentTech™ and FeetMap, as well as the proven Boa® Closure System, which now allows micro-adjustment in both directions.