The winning shoe for long ultra-trails! The MTR 201-II Max is lightweight and has excellent cushioning. The wedge, which is made from a 22/28mm D3O® EVA blend, cushions, supports and rebounds. It also provides prone and supine support as needed. This is achieved by using a stronger, more robust frame structure made from D3O®, which features high rebound and softer EVA in the core with the integrated patented Rolling Concept®. This competition shoe also has 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 handy Advanced MTR Speed Lace System.